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a6a53252 JY |
1 | /* |
2 | * Copyright(c) 2007 Atheros Corporation. All rights reserved. | |
3 | * | |
4 | * Derived from Intel e1000 driver | |
5 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
9 | * Software Foundation; either version 2 of the License, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
19 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include "atl1e.h" | |
23 | ||
24 | #define DRV_VERSION "1.0.0.7-NAPI" | |
25 | ||
26 | char atl1e_driver_name[] = "ATL1E"; | |
27 | char atl1e_driver_version[] = DRV_VERSION; | |
28 | #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026 | |
29 | /* | |
30 | * atl1e_pci_tbl - PCI Device ID Table | |
31 | * | |
32 | * Wildcard entries (PCI_ANY_ID) should come last | |
33 | * Last entry must be all 0s | |
34 | * | |
35 | * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, | |
36 | * Class, Class Mask, private data (not used) } | |
37 | */ | |
38 | static struct pci_device_id atl1e_pci_tbl[] = { | |
39 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)}, | |
bdb0e010 | 40 | {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, 0x1066)}, |
a6a53252 JY |
41 | /* required last entry */ |
42 | { 0 } | |
43 | }; | |
44 | MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl); | |
45 | ||
46 | MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>"); | |
47 | MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver"); | |
48 | MODULE_LICENSE("GPL"); | |
49 | MODULE_VERSION(DRV_VERSION); | |
50 | ||
e6ca2328 | 51 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter); |
a6a53252 JY |
52 | |
53 | static const u16 | |
54 | atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
55 | { | |
56 | {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD}, | |
57 | {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD}, | |
58 | {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD}, | |
59 | {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD} | |
60 | }; | |
61 | ||
62 | static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] = | |
63 | { | |
64 | REG_RXF0_BASE_ADDR_HI, | |
65 | REG_RXF1_BASE_ADDR_HI, | |
66 | REG_RXF2_BASE_ADDR_HI, | |
67 | REG_RXF3_BASE_ADDR_HI | |
68 | }; | |
69 | ||
70 | static const u16 | |
71 | atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
72 | { | |
73 | {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO}, | |
74 | {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO}, | |
75 | {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO}, | |
76 | {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO} | |
77 | }; | |
78 | ||
79 | static const u16 | |
80 | atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] = | |
81 | { | |
82 | {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO}, | |
83 | {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO}, | |
84 | {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO}, | |
85 | {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO} | |
86 | }; | |
87 | ||
88 | static const u16 atl1e_pay_load_size[] = { | |
89 | 128, 256, 512, 1024, 2048, 4096, | |
90 | }; | |
91 | ||
92 | /* | |
93 | * atl1e_irq_enable - Enable default interrupt generation settings | |
94 | * @adapter: board private structure | |
95 | */ | |
96 | static inline void atl1e_irq_enable(struct atl1e_adapter *adapter) | |
97 | { | |
98 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
99 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
100 | AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK); | |
101 | AT_WRITE_FLUSH(&adapter->hw); | |
102 | } | |
103 | } | |
104 | ||
105 | /* | |
106 | * atl1e_irq_disable - Mask off interrupt generation on the NIC | |
107 | * @adapter: board private structure | |
108 | */ | |
109 | static inline void atl1e_irq_disable(struct atl1e_adapter *adapter) | |
110 | { | |
111 | atomic_inc(&adapter->irq_sem); | |
112 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
113 | AT_WRITE_FLUSH(&adapter->hw); | |
114 | synchronize_irq(adapter->pdev->irq); | |
115 | } | |
116 | ||
117 | /* | |
118 | * atl1e_irq_reset - reset interrupt confiure on the NIC | |
119 | * @adapter: board private structure | |
120 | */ | |
121 | static inline void atl1e_irq_reset(struct atl1e_adapter *adapter) | |
122 | { | |
123 | atomic_set(&adapter->irq_sem, 0); | |
124 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
125 | AT_WRITE_REG(&adapter->hw, REG_IMR, 0); | |
126 | AT_WRITE_FLUSH(&adapter->hw); | |
127 | } | |
128 | ||
129 | /* | |
130 | * atl1e_phy_config - Timer Call-back | |
131 | * @data: pointer to netdev cast into an unsigned long | |
132 | */ | |
133 | static void atl1e_phy_config(unsigned long data) | |
134 | { | |
135 | struct atl1e_adapter *adapter = (struct atl1e_adapter *) data; | |
136 | struct atl1e_hw *hw = &adapter->hw; | |
137 | unsigned long flags; | |
138 | ||
139 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
140 | atl1e_restart_autoneg(hw); | |
141 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
142 | } | |
143 | ||
144 | void atl1e_reinit_locked(struct atl1e_adapter *adapter) | |
145 | { | |
146 | ||
147 | WARN_ON(in_interrupt()); | |
148 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
149 | msleep(1); | |
150 | atl1e_down(adapter); | |
151 | atl1e_up(adapter); | |
152 | clear_bit(__AT_RESETTING, &adapter->flags); | |
153 | } | |
154 | ||
155 | static void atl1e_reset_task(struct work_struct *work) | |
156 | { | |
157 | struct atl1e_adapter *adapter; | |
158 | adapter = container_of(work, struct atl1e_adapter, reset_task); | |
159 | ||
160 | atl1e_reinit_locked(adapter); | |
161 | } | |
162 | ||
163 | static int atl1e_check_link(struct atl1e_adapter *adapter) | |
164 | { | |
165 | struct atl1e_hw *hw = &adapter->hw; | |
166 | struct net_device *netdev = adapter->netdev; | |
167 | struct pci_dev *pdev = adapter->pdev; | |
168 | int err = 0; | |
169 | u16 speed, duplex, phy_data; | |
170 | ||
171 | /* MII_BMSR must read twise */ | |
172 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
173 | atl1e_read_phy_reg(hw, MII_BMSR, &phy_data); | |
174 | if ((phy_data & BMSR_LSTATUS) == 0) { | |
175 | /* link down */ | |
176 | if (netif_carrier_ok(netdev)) { /* old link state: Up */ | |
177 | u32 value; | |
178 | /* disable rx */ | |
179 | value = AT_READ_REG(hw, REG_MAC_CTRL); | |
180 | value &= ~MAC_CTRL_RX_EN; | |
181 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
182 | adapter->link_speed = SPEED_0; | |
183 | netif_carrier_off(netdev); | |
184 | netif_stop_queue(netdev); | |
185 | } | |
186 | } else { | |
187 | /* Link Up */ | |
188 | err = atl1e_get_speed_and_duplex(hw, &speed, &duplex); | |
189 | if (unlikely(err)) | |
190 | return err; | |
191 | ||
192 | /* link result is our setting */ | |
193 | if (adapter->link_speed != speed || | |
194 | adapter->link_duplex != duplex) { | |
195 | adapter->link_speed = speed; | |
196 | adapter->link_duplex = duplex; | |
197 | atl1e_setup_mac_ctrl(adapter); | |
198 | dev_info(&pdev->dev, | |
199 | "%s: %s NIC Link is Up<%d Mbps %s>\n", | |
200 | atl1e_driver_name, netdev->name, | |
201 | adapter->link_speed, | |
202 | adapter->link_duplex == FULL_DUPLEX ? | |
203 | "Full Duplex" : "Half Duplex"); | |
204 | } | |
205 | ||
206 | if (!netif_carrier_ok(netdev)) { | |
207 | /* Link down -> Up */ | |
208 | netif_carrier_on(netdev); | |
209 | netif_wake_queue(netdev); | |
210 | } | |
211 | } | |
212 | return 0; | |
213 | } | |
214 | ||
215 | /* | |
216 | * atl1e_link_chg_task - deal with link change event Out of interrupt context | |
217 | * @netdev: network interface device structure | |
218 | */ | |
219 | static void atl1e_link_chg_task(struct work_struct *work) | |
220 | { | |
221 | struct atl1e_adapter *adapter; | |
222 | unsigned long flags; | |
223 | ||
224 | adapter = container_of(work, struct atl1e_adapter, link_chg_task); | |
225 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
226 | atl1e_check_link(adapter); | |
227 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
228 | } | |
229 | ||
230 | static void atl1e_link_chg_event(struct atl1e_adapter *adapter) | |
231 | { | |
232 | struct net_device *netdev = adapter->netdev; | |
233 | struct pci_dev *pdev = adapter->pdev; | |
234 | u16 phy_data = 0; | |
235 | u16 link_up = 0; | |
236 | ||
237 | spin_lock(&adapter->mdio_lock); | |
238 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
239 | atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data); | |
240 | spin_unlock(&adapter->mdio_lock); | |
241 | link_up = phy_data & BMSR_LSTATUS; | |
242 | /* notify upper layer link down ASAP */ | |
243 | if (!link_up) { | |
244 | if (netif_carrier_ok(netdev)) { | |
245 | /* old link state: Up */ | |
246 | dev_info(&pdev->dev, "%s: %s NIC Link is Down\n", | |
247 | atl1e_driver_name, netdev->name); | |
248 | adapter->link_speed = SPEED_0; | |
249 | netif_stop_queue(netdev); | |
250 | } | |
251 | } | |
252 | schedule_work(&adapter->link_chg_task); | |
253 | } | |
254 | ||
255 | static void atl1e_del_timer(struct atl1e_adapter *adapter) | |
256 | { | |
257 | del_timer_sync(&adapter->phy_config_timer); | |
258 | } | |
259 | ||
260 | static void atl1e_cancel_work(struct atl1e_adapter *adapter) | |
261 | { | |
262 | cancel_work_sync(&adapter->reset_task); | |
263 | cancel_work_sync(&adapter->link_chg_task); | |
264 | } | |
265 | ||
266 | /* | |
267 | * atl1e_tx_timeout - Respond to a Tx Hang | |
268 | * @netdev: network interface device structure | |
269 | */ | |
270 | static void atl1e_tx_timeout(struct net_device *netdev) | |
271 | { | |
272 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
273 | ||
274 | /* Do the reset outside of interrupt context */ | |
275 | schedule_work(&adapter->reset_task); | |
276 | } | |
277 | ||
278 | /* | |
279 | * atl1e_set_multi - Multicast and Promiscuous mode set | |
280 | * @netdev: network interface device structure | |
281 | * | |
282 | * The set_multi entry point is called whenever the multicast address | |
283 | * list or the network interface flags are updated. This routine is | |
284 | * responsible for configuring the hardware for proper multicast, | |
285 | * promiscuous mode, and all-multi behavior. | |
286 | */ | |
287 | static void atl1e_set_multi(struct net_device *netdev) | |
288 | { | |
289 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
290 | struct atl1e_hw *hw = &adapter->hw; | |
291 | struct dev_mc_list *mc_ptr; | |
292 | u32 mac_ctrl_data = 0; | |
293 | u32 hash_value; | |
294 | ||
295 | /* Check for Promiscuous and All Multicast modes */ | |
296 | mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL); | |
297 | ||
298 | if (netdev->flags & IFF_PROMISC) { | |
299 | mac_ctrl_data |= MAC_CTRL_PROMIS_EN; | |
300 | } else if (netdev->flags & IFF_ALLMULTI) { | |
301 | mac_ctrl_data |= MAC_CTRL_MC_ALL_EN; | |
302 | mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN; | |
303 | } else { | |
304 | mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN); | |
305 | } | |
306 | ||
307 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
308 | ||
309 | /* clear the old settings from the multicast hash table */ | |
310 | AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0); | |
311 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0); | |
312 | ||
313 | /* comoute mc addresses' hash value ,and put it into hash table */ | |
314 | for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) { | |
315 | hash_value = atl1e_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
316 | atl1e_hash_set(hw, hash_value); | |
317 | } | |
318 | } | |
319 | ||
320 | static void atl1e_vlan_rx_register(struct net_device *netdev, | |
321 | struct vlan_group *grp) | |
322 | { | |
323 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
324 | struct pci_dev *pdev = adapter->pdev; | |
325 | u32 mac_ctrl_data = 0; | |
326 | ||
327 | dev_dbg(&pdev->dev, "atl1e_vlan_rx_register\n"); | |
328 | ||
329 | atl1e_irq_disable(adapter); | |
330 | ||
331 | adapter->vlgrp = grp; | |
332 | mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL); | |
333 | ||
334 | if (grp) { | |
335 | /* enable VLAN tag insert/strip */ | |
336 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
337 | } else { | |
338 | /* disable VLAN tag insert/strip */ | |
339 | mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN; | |
340 | } | |
341 | ||
342 | AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data); | |
343 | atl1e_irq_enable(adapter); | |
344 | } | |
345 | ||
346 | static void atl1e_restore_vlan(struct atl1e_adapter *adapter) | |
347 | { | |
348 | struct pci_dev *pdev = adapter->pdev; | |
349 | ||
350 | dev_dbg(&pdev->dev, "atl1e_restore_vlan !"); | |
351 | atl1e_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
352 | } | |
353 | /* | |
354 | * atl1e_set_mac - Change the Ethernet Address of the NIC | |
355 | * @netdev: network interface device structure | |
356 | * @p: pointer to an address structure | |
357 | * | |
358 | * Returns 0 on success, negative on failure | |
359 | */ | |
360 | static int atl1e_set_mac_addr(struct net_device *netdev, void *p) | |
361 | { | |
362 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
363 | struct sockaddr *addr = p; | |
364 | ||
365 | if (!is_valid_ether_addr(addr->sa_data)) | |
366 | return -EADDRNOTAVAIL; | |
367 | ||
368 | if (netif_running(netdev)) | |
369 | return -EBUSY; | |
370 | ||
371 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
372 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
373 | ||
374 | atl1e_hw_set_mac_addr(&adapter->hw); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | /* | |
380 | * atl1e_change_mtu - Change the Maximum Transfer Unit | |
381 | * @netdev: network interface device structure | |
382 | * @new_mtu: new value for maximum frame size | |
383 | * | |
384 | * Returns 0 on success, negative on failure | |
385 | */ | |
386 | static int atl1e_change_mtu(struct net_device *netdev, int new_mtu) | |
387 | { | |
388 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
389 | int old_mtu = netdev->mtu; | |
390 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; | |
391 | ||
392 | if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || | |
393 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
394 | dev_warn(&adapter->pdev->dev, "invalid MTU setting\n"); | |
395 | return -EINVAL; | |
396 | } | |
397 | /* set MTU */ | |
398 | if (old_mtu != new_mtu && netif_running(netdev)) { | |
399 | while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) | |
400 | msleep(1); | |
401 | netdev->mtu = new_mtu; | |
402 | adapter->hw.max_frame_size = new_mtu; | |
403 | adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3; | |
404 | atl1e_down(adapter); | |
405 | atl1e_up(adapter); | |
406 | clear_bit(__AT_RESETTING, &adapter->flags); | |
407 | } | |
408 | return 0; | |
409 | } | |
410 | ||
411 | /* | |
412 | * caller should hold mdio_lock | |
413 | */ | |
414 | static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num) | |
415 | { | |
416 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
417 | u16 result; | |
418 | ||
419 | atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result); | |
420 | return result; | |
421 | } | |
422 | ||
423 | static void atl1e_mdio_write(struct net_device *netdev, int phy_id, | |
424 | int reg_num, int val) | |
425 | { | |
426 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
427 | ||
428 | atl1e_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val); | |
429 | } | |
430 | ||
431 | /* | |
432 | * atl1e_mii_ioctl - | |
433 | * @netdev: | |
434 | * @ifreq: | |
435 | * @cmd: | |
436 | */ | |
437 | static int atl1e_mii_ioctl(struct net_device *netdev, | |
438 | struct ifreq *ifr, int cmd) | |
439 | { | |
440 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
441 | struct pci_dev *pdev = adapter->pdev; | |
442 | struct mii_ioctl_data *data = if_mii(ifr); | |
443 | unsigned long flags; | |
444 | int retval = 0; | |
445 | ||
446 | if (!netif_running(netdev)) | |
447 | return -EINVAL; | |
448 | ||
449 | spin_lock_irqsave(&adapter->mdio_lock, flags); | |
450 | switch (cmd) { | |
451 | case SIOCGMIIPHY: | |
452 | data->phy_id = 0; | |
453 | break; | |
454 | ||
455 | case SIOCGMIIREG: | |
456 | if (!capable(CAP_NET_ADMIN)) { | |
457 | retval = -EPERM; | |
458 | goto out; | |
459 | } | |
460 | if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, | |
461 | &data->val_out)) { | |
462 | retval = -EIO; | |
463 | goto out; | |
464 | } | |
465 | break; | |
466 | ||
467 | case SIOCSMIIREG: | |
468 | if (!capable(CAP_NET_ADMIN)) { | |
469 | retval = -EPERM; | |
470 | goto out; | |
471 | } | |
472 | if (data->reg_num & ~(0x1F)) { | |
473 | retval = -EFAULT; | |
474 | goto out; | |
475 | } | |
476 | ||
477 | dev_dbg(&pdev->dev, "<atl1e_mii_ioctl> write %x %x", | |
478 | data->reg_num, data->val_in); | |
479 | if (atl1e_write_phy_reg(&adapter->hw, | |
480 | data->reg_num, data->val_in)) { | |
481 | retval = -EIO; | |
482 | goto out; | |
483 | } | |
484 | break; | |
485 | ||
486 | default: | |
487 | retval = -EOPNOTSUPP; | |
488 | break; | |
489 | } | |
490 | out: | |
491 | spin_unlock_irqrestore(&adapter->mdio_lock, flags); | |
492 | return retval; | |
493 | ||
494 | } | |
495 | ||
496 | /* | |
497 | * atl1e_ioctl - | |
498 | * @netdev: | |
499 | * @ifreq: | |
500 | * @cmd: | |
501 | */ | |
502 | static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
503 | { | |
504 | switch (cmd) { | |
505 | case SIOCGMIIPHY: | |
506 | case SIOCGMIIREG: | |
507 | case SIOCSMIIREG: | |
508 | return atl1e_mii_ioctl(netdev, ifr, cmd); | |
509 | default: | |
510 | return -EOPNOTSUPP; | |
511 | } | |
512 | } | |
513 | ||
514 | static void atl1e_setup_pcicmd(struct pci_dev *pdev) | |
515 | { | |
516 | u16 cmd; | |
517 | ||
518 | pci_read_config_word(pdev, PCI_COMMAND, &cmd); | |
519 | cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO); | |
520 | cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); | |
521 | pci_write_config_word(pdev, PCI_COMMAND, cmd); | |
522 | ||
523 | /* | |
524 | * some motherboards BIOS(PXE/EFI) driver may set PME | |
525 | * while they transfer control to OS (Windows/Linux) | |
526 | * so we should clear this bit before NIC work normally | |
527 | */ | |
528 | pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0); | |
529 | msleep(1); | |
530 | } | |
531 | ||
532 | /* | |
533 | * atl1e_alloc_queues - Allocate memory for all rings | |
534 | * @adapter: board private structure to initialize | |
535 | * | |
536 | */ | |
537 | static int __devinit atl1e_alloc_queues(struct atl1e_adapter *adapter) | |
538 | { | |
539 | return 0; | |
540 | } | |
541 | ||
542 | /* | |
543 | * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter) | |
544 | * @adapter: board private structure to initialize | |
545 | * | |
546 | * atl1e_sw_init initializes the Adapter private data structure. | |
547 | * Fields are initialized based on PCI device information and | |
548 | * OS network device settings (MTU size). | |
549 | */ | |
550 | static int __devinit atl1e_sw_init(struct atl1e_adapter *adapter) | |
551 | { | |
552 | struct atl1e_hw *hw = &adapter->hw; | |
553 | struct pci_dev *pdev = adapter->pdev; | |
554 | u32 phy_status_data = 0; | |
555 | ||
556 | adapter->wol = 0; | |
557 | adapter->link_speed = SPEED_0; /* hardware init */ | |
558 | adapter->link_duplex = FULL_DUPLEX; | |
559 | adapter->num_rx_queues = 1; | |
560 | ||
561 | /* PCI config space info */ | |
562 | hw->vendor_id = pdev->vendor; | |
563 | hw->device_id = pdev->device; | |
564 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
565 | hw->subsystem_id = pdev->subsystem_device; | |
566 | ||
567 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
568 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
569 | ||
570 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
571 | /* nic type */ | |
572 | if (hw->revision_id >= 0xF0) { | |
573 | hw->nic_type = athr_l2e_revB; | |
574 | } else { | |
575 | if (phy_status_data & PHY_STATUS_100M) | |
576 | hw->nic_type = athr_l1e; | |
577 | else | |
578 | hw->nic_type = athr_l2e_revA; | |
579 | } | |
580 | ||
581 | phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS); | |
582 | ||
583 | if (phy_status_data & PHY_STATUS_EMI_CA) | |
584 | hw->emi_ca = true; | |
585 | else | |
586 | hw->emi_ca = false; | |
587 | ||
588 | hw->phy_configured = false; | |
589 | hw->preamble_len = 7; | |
590 | hw->max_frame_size = adapter->netdev->mtu; | |
591 | hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN + | |
592 | VLAN_HLEN + ETH_FCS_LEN + 7) >> 3; | |
593 | ||
594 | hw->rrs_type = atl1e_rrs_disable; | |
595 | hw->indirect_tab = 0; | |
596 | hw->base_cpu = 0; | |
597 | ||
598 | /* need confirm */ | |
599 | ||
600 | hw->ict = 50000; /* 100ms */ | |
601 | hw->smb_timer = 200000; /* 200ms */ | |
602 | hw->tpd_burst = 5; | |
603 | hw->rrd_thresh = 1; | |
604 | hw->tpd_thresh = adapter->tx_ring.count / 2; | |
605 | hw->rx_count_down = 4; /* 2us resolution */ | |
606 | hw->tx_count_down = hw->imt * 4 / 3; | |
607 | hw->dmar_block = atl1e_dma_req_1024; | |
608 | hw->dmaw_block = atl1e_dma_req_1024; | |
609 | hw->dmar_dly_cnt = 15; | |
610 | hw->dmaw_dly_cnt = 4; | |
611 | ||
612 | if (atl1e_alloc_queues(adapter)) { | |
613 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
614 | return -ENOMEM; | |
615 | } | |
616 | ||
617 | atomic_set(&adapter->irq_sem, 1); | |
618 | spin_lock_init(&adapter->mdio_lock); | |
619 | spin_lock_init(&adapter->tx_lock); | |
620 | ||
621 | set_bit(__AT_DOWN, &adapter->flags); | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
626 | /* | |
627 | * atl1e_clean_tx_ring - Free Tx-skb | |
628 | * @adapter: board private structure | |
629 | */ | |
630 | static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) | |
631 | { | |
632 | struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *) | |
633 | &adapter->tx_ring; | |
634 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
635 | struct pci_dev *pdev = adapter->pdev; | |
636 | u16 index, ring_count; | |
637 | ||
638 | if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL) | |
639 | return; | |
640 | ||
641 | ring_count = tx_ring->count; | |
642 | /* first unmmap dma */ | |
643 | for (index = 0; index < ring_count; index++) { | |
644 | tx_buffer = &tx_ring->tx_buffer[index]; | |
645 | if (tx_buffer->dma) { | |
646 | pci_unmap_page(pdev, tx_buffer->dma, | |
647 | tx_buffer->length, PCI_DMA_TODEVICE); | |
648 | tx_buffer->dma = 0; | |
649 | } | |
650 | } | |
651 | /* second free skb */ | |
652 | for (index = 0; index < ring_count; index++) { | |
653 | tx_buffer = &tx_ring->tx_buffer[index]; | |
654 | if (tx_buffer->skb) { | |
655 | dev_kfree_skb_any(tx_buffer->skb); | |
656 | tx_buffer->skb = NULL; | |
657 | } | |
658 | } | |
659 | /* Zero out Tx-buffers */ | |
660 | memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) * | |
661 | ring_count); | |
662 | memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) * | |
663 | ring_count); | |
664 | } | |
665 | ||
666 | /* | |
667 | * atl1e_clean_rx_ring - Free rx-reservation skbs | |
668 | * @adapter: board private structure | |
669 | */ | |
670 | static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter) | |
671 | { | |
672 | struct atl1e_rx_ring *rx_ring = | |
673 | (struct atl1e_rx_ring *)&adapter->rx_ring; | |
674 | struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc; | |
675 | u16 i, j; | |
676 | ||
677 | ||
678 | if (adapter->ring_vir_addr == NULL) | |
679 | return; | |
680 | /* Zero out the descriptor ring */ | |
681 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
682 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
683 | if (rx_page_desc[i].rx_page[j].addr != NULL) { | |
684 | memset(rx_page_desc[i].rx_page[j].addr, 0, | |
685 | rx_ring->real_page_size); | |
686 | } | |
687 | } | |
688 | } | |
689 | } | |
690 | ||
691 | static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size) | |
692 | { | |
693 | *ring_size = ((u32)(adapter->tx_ring.count * | |
694 | sizeof(struct atl1e_tpd_desc) + 7 | |
695 | /* tx ring, qword align */ | |
696 | + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE * | |
697 | adapter->num_rx_queues + 31 | |
698 | /* rx ring, 32 bytes align */ | |
699 | + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) * | |
700 | sizeof(u32) + 3)); | |
701 | /* tx, rx cmd, dword align */ | |
702 | } | |
703 | ||
704 | static void atl1e_init_ring_resources(struct atl1e_adapter *adapter) | |
705 | { | |
706 | struct atl1e_tx_ring *tx_ring = NULL; | |
707 | struct atl1e_rx_ring *rx_ring = NULL; | |
708 | ||
709 | tx_ring = &adapter->tx_ring; | |
710 | rx_ring = &adapter->rx_ring; | |
711 | ||
712 | rx_ring->real_page_size = adapter->rx_ring.page_size | |
713 | + adapter->hw.max_frame_size | |
714 | + ETH_HLEN + VLAN_HLEN | |
715 | + ETH_FCS_LEN; | |
716 | rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32); | |
717 | atl1e_cal_ring_size(adapter, &adapter->ring_size); | |
718 | ||
719 | adapter->ring_vir_addr = NULL; | |
720 | adapter->rx_ring.desc = NULL; | |
721 | rwlock_init(&adapter->tx_ring.tx_lock); | |
722 | ||
723 | return; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Read / Write Ptr Initialize: | |
728 | */ | |
729 | static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter) | |
730 | { | |
731 | struct atl1e_tx_ring *tx_ring = NULL; | |
732 | struct atl1e_rx_ring *rx_ring = NULL; | |
733 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
734 | int i, j; | |
735 | ||
736 | tx_ring = &adapter->tx_ring; | |
737 | rx_ring = &adapter->rx_ring; | |
738 | rx_page_desc = rx_ring->rx_page_desc; | |
739 | ||
740 | tx_ring->next_to_use = 0; | |
741 | atomic_set(&tx_ring->next_to_clean, 0); | |
742 | ||
743 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
744 | rx_page_desc[i].rx_using = 0; | |
745 | rx_page_desc[i].rx_nxseq = 0; | |
746 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
747 | *rx_page_desc[i].rx_page[j].write_offset_addr = 0; | |
748 | rx_page_desc[i].rx_page[j].read_offset = 0; | |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | /* | |
754 | * atl1e_free_ring_resources - Free Tx / RX descriptor Resources | |
755 | * @adapter: board private structure | |
756 | * | |
757 | * Free all transmit software resources | |
758 | */ | |
759 | static void atl1e_free_ring_resources(struct atl1e_adapter *adapter) | |
760 | { | |
761 | struct pci_dev *pdev = adapter->pdev; | |
762 | ||
763 | atl1e_clean_tx_ring(adapter); | |
764 | atl1e_clean_rx_ring(adapter); | |
765 | ||
766 | if (adapter->ring_vir_addr) { | |
767 | pci_free_consistent(pdev, adapter->ring_size, | |
768 | adapter->ring_vir_addr, adapter->ring_dma); | |
769 | adapter->ring_vir_addr = NULL; | |
770 | } | |
771 | ||
772 | if (adapter->tx_ring.tx_buffer) { | |
773 | kfree(adapter->tx_ring.tx_buffer); | |
774 | adapter->tx_ring.tx_buffer = NULL; | |
775 | } | |
776 | } | |
777 | ||
778 | /* | |
779 | * atl1e_setup_mem_resources - allocate Tx / RX descriptor resources | |
780 | * @adapter: board private structure | |
781 | * | |
782 | * Return 0 on success, negative on failure | |
783 | */ | |
784 | static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) | |
785 | { | |
786 | struct pci_dev *pdev = adapter->pdev; | |
787 | struct atl1e_tx_ring *tx_ring; | |
788 | struct atl1e_rx_ring *rx_ring; | |
789 | struct atl1e_rx_page_desc *rx_page_desc; | |
790 | int size, i, j; | |
791 | u32 offset = 0; | |
792 | int err = 0; | |
793 | ||
794 | if (adapter->ring_vir_addr != NULL) | |
795 | return 0; /* alloced already */ | |
796 | ||
797 | tx_ring = &adapter->tx_ring; | |
798 | rx_ring = &adapter->rx_ring; | |
799 | ||
800 | /* real ring DMA buffer */ | |
801 | ||
802 | size = adapter->ring_size; | |
803 | adapter->ring_vir_addr = pci_alloc_consistent(pdev, | |
804 | adapter->ring_size, &adapter->ring_dma); | |
805 | ||
806 | if (adapter->ring_vir_addr == NULL) { | |
807 | dev_err(&pdev->dev, "pci_alloc_consistent failed, " | |
808 | "size = D%d", size); | |
809 | return -ENOMEM; | |
810 | } | |
811 | ||
812 | memset(adapter->ring_vir_addr, 0, adapter->ring_size); | |
813 | ||
814 | rx_page_desc = rx_ring->rx_page_desc; | |
815 | ||
816 | /* Init TPD Ring */ | |
817 | tx_ring->dma = roundup(adapter->ring_dma, 8); | |
818 | offset = tx_ring->dma - adapter->ring_dma; | |
819 | tx_ring->desc = (struct atl1e_tpd_desc *) | |
820 | (adapter->ring_vir_addr + offset); | |
821 | size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count); | |
822 | tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL); | |
823 | if (tx_ring->tx_buffer == NULL) { | |
824 | dev_err(&pdev->dev, "kzalloc failed , size = D%d", size); | |
825 | err = -ENOMEM; | |
826 | goto failed; | |
827 | } | |
828 | ||
829 | /* Init RXF-Pages */ | |
830 | offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count); | |
831 | offset = roundup(offset, 32); | |
832 | ||
833 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
834 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
835 | rx_page_desc[i].rx_page[j].dma = | |
836 | adapter->ring_dma + offset; | |
837 | rx_page_desc[i].rx_page[j].addr = | |
838 | adapter->ring_vir_addr + offset; | |
839 | offset += rx_ring->real_page_size; | |
840 | } | |
841 | } | |
842 | ||
843 | /* Init CMB dma address */ | |
844 | tx_ring->cmb_dma = adapter->ring_dma + offset; | |
845 | tx_ring->cmb = (u32 *)(adapter->ring_vir_addr + offset); | |
846 | offset += sizeof(u32); | |
847 | ||
848 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
849 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
850 | rx_page_desc[i].rx_page[j].write_offset_dma = | |
851 | adapter->ring_dma + offset; | |
852 | rx_page_desc[i].rx_page[j].write_offset_addr = | |
853 | adapter->ring_vir_addr + offset; | |
854 | offset += sizeof(u32); | |
855 | } | |
856 | } | |
857 | ||
858 | if (unlikely(offset > adapter->ring_size)) { | |
859 | dev_err(&pdev->dev, "offset(%d) > ring size(%d) !!\n", | |
860 | offset, adapter->ring_size); | |
861 | err = -1; | |
862 | goto failed; | |
863 | } | |
864 | ||
865 | return 0; | |
866 | failed: | |
867 | if (adapter->ring_vir_addr != NULL) { | |
868 | pci_free_consistent(pdev, adapter->ring_size, | |
869 | adapter->ring_vir_addr, adapter->ring_dma); | |
870 | adapter->ring_vir_addr = NULL; | |
871 | } | |
872 | return err; | |
873 | } | |
874 | ||
875 | static inline void atl1e_configure_des_ring(const struct atl1e_adapter *adapter) | |
876 | { | |
877 | ||
878 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
879 | struct atl1e_rx_ring *rx_ring = | |
880 | (struct atl1e_rx_ring *)&adapter->rx_ring; | |
881 | struct atl1e_tx_ring *tx_ring = | |
882 | (struct atl1e_tx_ring *)&adapter->tx_ring; | |
883 | struct atl1e_rx_page_desc *rx_page_desc = NULL; | |
884 | int i, j; | |
885 | ||
886 | AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI, | |
887 | (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32)); | |
888 | AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO, | |
889 | (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK)); | |
890 | AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count)); | |
891 | AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO, | |
892 | (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK)); | |
893 | ||
894 | rx_page_desc = rx_ring->rx_page_desc; | |
895 | /* RXF Page Physical address / Page Length */ | |
896 | for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) { | |
897 | AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i], | |
898 | (u32)((adapter->ring_dma & | |
899 | AT_DMA_HI_ADDR_MASK) >> 32)); | |
900 | for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) { | |
901 | u32 page_phy_addr; | |
902 | u32 offset_phy_addr; | |
903 | ||
904 | page_phy_addr = rx_page_desc[i].rx_page[j].dma; | |
905 | offset_phy_addr = | |
906 | rx_page_desc[i].rx_page[j].write_offset_dma; | |
907 | ||
908 | AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j], | |
909 | page_phy_addr & AT_DMA_LO_ADDR_MASK); | |
910 | AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j], | |
911 | offset_phy_addr & AT_DMA_LO_ADDR_MASK); | |
912 | AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1); | |
913 | } | |
914 | } | |
915 | /* Page Length */ | |
916 | AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size); | |
917 | /* Load all of base address above */ | |
918 | AT_WRITE_REG(hw, REG_LOAD_PTR, 1); | |
919 | ||
920 | return; | |
921 | } | |
922 | ||
923 | static inline void atl1e_configure_tx(struct atl1e_adapter *adapter) | |
924 | { | |
925 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
926 | u32 dev_ctrl_data = 0; | |
927 | u32 max_pay_load = 0; | |
928 | u32 jumbo_thresh = 0; | |
929 | u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */ | |
930 | ||
931 | /* configure TXQ param */ | |
932 | if (hw->nic_type != athr_l2e_revB) { | |
933 | extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN; | |
934 | if (hw->max_frame_size <= 1500) { | |
935 | jumbo_thresh = hw->max_frame_size + extra_size; | |
936 | } else if (hw->max_frame_size < 6*1024) { | |
937 | jumbo_thresh = | |
938 | (hw->max_frame_size + extra_size) * 2 / 3; | |
939 | } else { | |
940 | jumbo_thresh = (hw->max_frame_size + extra_size) / 2; | |
941 | } | |
942 | AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3); | |
943 | } | |
944 | ||
945 | dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL); | |
946 | ||
947 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT)) & | |
948 | DEVICE_CTRL_MAX_PAYLOAD_MASK; | |
949 | ||
950 | hw->dmaw_block = min(max_pay_load, hw->dmaw_block); | |
951 | ||
952 | max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT)) & | |
953 | DEVICE_CTRL_MAX_RREQ_SZ_MASK; | |
954 | hw->dmar_block = min(max_pay_load, hw->dmar_block); | |
955 | ||
956 | if (hw->nic_type != athr_l2e_revB) | |
957 | AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2, | |
958 | atl1e_pay_load_size[hw->dmar_block]); | |
959 | /* enable TXQ */ | |
960 | AT_WRITE_REGW(hw, REG_TXQ_CTRL, | |
961 | (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK) | |
962 | << TXQ_CTRL_NUM_TPD_BURST_SHIFT) | |
963 | | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN); | |
964 | return; | |
965 | } | |
966 | ||
967 | static inline void atl1e_configure_rx(struct atl1e_adapter *adapter) | |
968 | { | |
969 | struct atl1e_hw *hw = (struct atl1e_hw *)&adapter->hw; | |
970 | u32 rxf_len = 0; | |
971 | u32 rxf_low = 0; | |
972 | u32 rxf_high = 0; | |
973 | u32 rxf_thresh_data = 0; | |
974 | u32 rxq_ctrl_data = 0; | |
975 | ||
976 | if (hw->nic_type != athr_l2e_revB) { | |
977 | AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM, | |
978 | (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) << | |
979 | RXQ_JMBOSZ_TH_SHIFT | | |
980 | (1 & RXQ_JMBO_LKAH_MASK) << | |
981 | RXQ_JMBO_LKAH_SHIFT)); | |
982 | ||
983 | rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN); | |
984 | rxf_high = rxf_len * 4 / 5; | |
985 | rxf_low = rxf_len / 5; | |
986 | rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK) | |
987 | << RXQ_RXF_PAUSE_TH_HI_SHIFT) | | |
988 | ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK) | |
989 | << RXQ_RXF_PAUSE_TH_LO_SHIFT); | |
990 | ||
991 | AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data); | |
992 | } | |
993 | ||
994 | /* RRS */ | |
995 | AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab); | |
996 | AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu); | |
997 | ||
998 | if (hw->rrs_type & atl1e_rrs_ipv4) | |
999 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4; | |
1000 | ||
1001 | if (hw->rrs_type & atl1e_rrs_ipv4_tcp) | |
1002 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP; | |
1003 | ||
1004 | if (hw->rrs_type & atl1e_rrs_ipv6) | |
1005 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6; | |
1006 | ||
1007 | if (hw->rrs_type & atl1e_rrs_ipv6_tcp) | |
1008 | rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP; | |
1009 | ||
1010 | if (hw->rrs_type != atl1e_rrs_disable) | |
1011 | rxq_ctrl_data |= | |
1012 | (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT); | |
1013 | ||
1014 | rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 | | |
1015 | RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN; | |
1016 | ||
1017 | AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data); | |
1018 | return; | |
1019 | } | |
1020 | ||
1021 | static inline void atl1e_configure_dma(struct atl1e_adapter *adapter) | |
1022 | { | |
1023 | struct atl1e_hw *hw = &adapter->hw; | |
1024 | u32 dma_ctrl_data = 0; | |
1025 | ||
1026 | dma_ctrl_data = DMA_CTRL_RXCMB_EN; | |
1027 | dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK) | |
1028 | << DMA_CTRL_DMAR_BURST_LEN_SHIFT; | |
1029 | dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK) | |
1030 | << DMA_CTRL_DMAW_BURST_LEN_SHIFT; | |
1031 | dma_ctrl_data |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER; | |
1032 | dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK) | |
1033 | << DMA_CTRL_DMAR_DLY_CNT_SHIFT; | |
1034 | dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK) | |
1035 | << DMA_CTRL_DMAW_DLY_CNT_SHIFT; | |
1036 | ||
1037 | AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data); | |
1038 | return; | |
1039 | } | |
1040 | ||
e6ca2328 | 1041 | static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter) |
a6a53252 JY |
1042 | { |
1043 | u32 value; | |
1044 | struct atl1e_hw *hw = &adapter->hw; | |
1045 | struct net_device *netdev = adapter->netdev; | |
1046 | ||
1047 | /* Config MAC CTRL Register */ | |
1048 | value = MAC_CTRL_TX_EN | | |
1049 | MAC_CTRL_RX_EN ; | |
1050 | ||
1051 | if (FULL_DUPLEX == adapter->link_duplex) | |
1052 | value |= MAC_CTRL_DUPLX; | |
1053 | ||
1054 | value |= ((u32)((SPEED_1000 == adapter->link_speed) ? | |
1055 | MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) << | |
1056 | MAC_CTRL_SPEED_SHIFT); | |
1057 | value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW); | |
1058 | ||
1059 | value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD); | |
1060 | value |= (((u32)adapter->hw.preamble_len & | |
1061 | MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT); | |
1062 | ||
1063 | if (adapter->vlgrp) | |
1064 | value |= MAC_CTRL_RMV_VLAN; | |
1065 | ||
1066 | value |= MAC_CTRL_BC_EN; | |
1067 | if (netdev->flags & IFF_PROMISC) | |
1068 | value |= MAC_CTRL_PROMIS_EN; | |
1069 | if (netdev->flags & IFF_ALLMULTI) | |
1070 | value |= MAC_CTRL_MC_ALL_EN; | |
1071 | ||
1072 | AT_WRITE_REG(hw, REG_MAC_CTRL, value); | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * atl1e_configure - Configure Transmit&Receive Unit after Reset | |
1077 | * @adapter: board private structure | |
1078 | * | |
1079 | * Configure the Tx /Rx unit of the MAC after a reset. | |
1080 | */ | |
1081 | static int atl1e_configure(struct atl1e_adapter *adapter) | |
1082 | { | |
1083 | struct atl1e_hw *hw = &adapter->hw; | |
1084 | struct pci_dev *pdev = adapter->pdev; | |
1085 | ||
1086 | u32 intr_status_data = 0; | |
1087 | ||
1088 | /* clear interrupt status */ | |
1089 | AT_WRITE_REG(hw, REG_ISR, ~0); | |
1090 | ||
1091 | /* 1. set MAC Address */ | |
1092 | atl1e_hw_set_mac_addr(hw); | |
1093 | ||
1094 | /* 2. Init the Multicast HASH table done by set_muti */ | |
1095 | ||
1096 | /* 3. Clear any WOL status */ | |
1097 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
1098 | ||
1099 | /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr | |
1100 | * TPD Ring/SMB/RXF0 Page CMBs, they use the same | |
1101 | * High 32bits memory */ | |
1102 | atl1e_configure_des_ring(adapter); | |
1103 | ||
1104 | /* 5. set Interrupt Moderator Timer */ | |
1105 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt); | |
1106 | AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt); | |
1107 | AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE | | |
1108 | MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN); | |
1109 | ||
1110 | /* 6. rx/tx threshold to trig interrupt */ | |
1111 | AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh); | |
1112 | AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh); | |
1113 | AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down); | |
1114 | AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down); | |
1115 | ||
1116 | /* 7. set Interrupt Clear Timer */ | |
1117 | AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict); | |
1118 | ||
1119 | /* 8. set MTU */ | |
1120 | AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN + | |
1121 | VLAN_HLEN + ETH_FCS_LEN); | |
1122 | ||
1123 | /* 9. config TXQ early tx threshold */ | |
1124 | atl1e_configure_tx(adapter); | |
1125 | ||
1126 | /* 10. config RXQ */ | |
1127 | atl1e_configure_rx(adapter); | |
1128 | ||
1129 | /* 11. config DMA Engine */ | |
1130 | atl1e_configure_dma(adapter); | |
1131 | ||
1132 | /* 12. smb timer to trig interrupt */ | |
1133 | AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer); | |
1134 | ||
1135 | intr_status_data = AT_READ_REG(hw, REG_ISR); | |
1136 | if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) { | |
1137 | dev_err(&pdev->dev, "atl1e_configure failed," | |
1138 | "PCIE phy link down\n"); | |
1139 | return -1; | |
1140 | } | |
1141 | ||
1142 | AT_WRITE_REG(hw, REG_ISR, 0x7fffffff); | |
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * atl1e_get_stats - Get System Network Statistics | |
1148 | * @netdev: network interface device structure | |
1149 | * | |
1150 | * Returns the address of the device statistics structure. | |
1151 | * The statistics are actually updated from the timer callback. | |
1152 | */ | |
1153 | static struct net_device_stats *atl1e_get_stats(struct net_device *netdev) | |
1154 | { | |
1155 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1156 | struct atl1e_hw_stats *hw_stats = &adapter->hw_stats; | |
d3f65f7c | 1157 | struct net_device_stats *net_stats = &netdev->stats; |
a6a53252 JY |
1158 | |
1159 | net_stats->rx_packets = hw_stats->rx_ok; | |
1160 | net_stats->tx_packets = hw_stats->tx_ok; | |
1161 | net_stats->rx_bytes = hw_stats->rx_byte_cnt; | |
1162 | net_stats->tx_bytes = hw_stats->tx_byte_cnt; | |
1163 | net_stats->multicast = hw_stats->rx_mcast; | |
1164 | net_stats->collisions = hw_stats->tx_1_col + | |
1165 | hw_stats->tx_2_col * 2 + | |
1166 | hw_stats->tx_late_col + hw_stats->tx_abort_col; | |
1167 | ||
1168 | net_stats->rx_errors = hw_stats->rx_frag + hw_stats->rx_fcs_err + | |
1169 | hw_stats->rx_len_err + hw_stats->rx_sz_ov + | |
1170 | hw_stats->rx_rrd_ov + hw_stats->rx_align_err; | |
1171 | net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov; | |
1172 | net_stats->rx_length_errors = hw_stats->rx_len_err; | |
1173 | net_stats->rx_crc_errors = hw_stats->rx_fcs_err; | |
1174 | net_stats->rx_frame_errors = hw_stats->rx_align_err; | |
1175 | net_stats->rx_over_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1176 | ||
1177 | net_stats->rx_missed_errors = hw_stats->rx_rrd_ov + hw_stats->rx_rxf_ov; | |
1178 | ||
1179 | net_stats->tx_errors = hw_stats->tx_late_col + hw_stats->tx_abort_col + | |
1180 | hw_stats->tx_underrun + hw_stats->tx_trunc; | |
1181 | net_stats->tx_fifo_errors = hw_stats->tx_underrun; | |
1182 | net_stats->tx_aborted_errors = hw_stats->tx_abort_col; | |
1183 | net_stats->tx_window_errors = hw_stats->tx_late_col; | |
1184 | ||
d3f65f7c | 1185 | return net_stats; |
a6a53252 JY |
1186 | } |
1187 | ||
1188 | static void atl1e_update_hw_stats(struct atl1e_adapter *adapter) | |
1189 | { | |
1190 | u16 hw_reg_addr = 0; | |
1191 | unsigned long *stats_item = NULL; | |
1192 | ||
1193 | /* update rx status */ | |
1194 | hw_reg_addr = REG_MAC_RX_STATUS_BIN; | |
1195 | stats_item = &adapter->hw_stats.rx_ok; | |
1196 | while (hw_reg_addr <= REG_MAC_RX_STATUS_END) { | |
1197 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1198 | stats_item++; | |
1199 | hw_reg_addr += 4; | |
1200 | } | |
1201 | /* update tx status */ | |
1202 | hw_reg_addr = REG_MAC_TX_STATUS_BIN; | |
1203 | stats_item = &adapter->hw_stats.tx_ok; | |
1204 | while (hw_reg_addr <= REG_MAC_TX_STATUS_END) { | |
1205 | *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr); | |
1206 | stats_item++; | |
1207 | hw_reg_addr += 4; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter) | |
1212 | { | |
1213 | u16 phy_data; | |
1214 | ||
1215 | spin_lock(&adapter->mdio_lock); | |
1216 | atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data); | |
1217 | spin_unlock(&adapter->mdio_lock); | |
1218 | } | |
1219 | ||
1220 | static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter) | |
1221 | { | |
1222 | struct atl1e_tx_ring *tx_ring = (struct atl1e_tx_ring *) | |
1223 | &adapter->tx_ring; | |
1224 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
1225 | u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX); | |
1226 | u16 next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1227 | ||
1228 | while (next_to_clean != hw_next_to_clean) { | |
1229 | tx_buffer = &tx_ring->tx_buffer[next_to_clean]; | |
1230 | if (tx_buffer->dma) { | |
1231 | pci_unmap_page(adapter->pdev, tx_buffer->dma, | |
1232 | tx_buffer->length, PCI_DMA_TODEVICE); | |
1233 | tx_buffer->dma = 0; | |
1234 | } | |
1235 | ||
1236 | if (tx_buffer->skb) { | |
1237 | dev_kfree_skb_irq(tx_buffer->skb); | |
1238 | tx_buffer->skb = NULL; | |
1239 | } | |
1240 | ||
1241 | if (++next_to_clean == tx_ring->count) | |
1242 | next_to_clean = 0; | |
1243 | } | |
1244 | ||
1245 | atomic_set(&tx_ring->next_to_clean, next_to_clean); | |
1246 | ||
1247 | if (netif_queue_stopped(adapter->netdev) && | |
1248 | netif_carrier_ok(adapter->netdev)) { | |
1249 | netif_wake_queue(adapter->netdev); | |
1250 | } | |
1251 | ||
1252 | return true; | |
1253 | } | |
1254 | ||
1255 | /* | |
1256 | * atl1e_intr - Interrupt Handler | |
1257 | * @irq: interrupt number | |
1258 | * @data: pointer to a network interface device structure | |
1259 | * @pt_regs: CPU registers structure | |
1260 | */ | |
1261 | static irqreturn_t atl1e_intr(int irq, void *data) | |
1262 | { | |
1263 | struct net_device *netdev = data; | |
1264 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1265 | struct pci_dev *pdev = adapter->pdev; | |
1266 | struct atl1e_hw *hw = &adapter->hw; | |
1267 | int max_ints = AT_MAX_INT_WORK; | |
1268 | int handled = IRQ_NONE; | |
1269 | u32 status; | |
1270 | ||
1271 | do { | |
1272 | status = AT_READ_REG(hw, REG_ISR); | |
1273 | if ((status & IMR_NORMAL_MASK) == 0 || | |
1274 | (status & ISR_DIS_INT) != 0) { | |
1275 | if (max_ints != AT_MAX_INT_WORK) | |
1276 | handled = IRQ_HANDLED; | |
1277 | break; | |
1278 | } | |
1279 | /* link event */ | |
1280 | if (status & ISR_GPHY) | |
1281 | atl1e_clear_phy_int(adapter); | |
1282 | /* Ack ISR */ | |
1283 | AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT); | |
1284 | ||
1285 | handled = IRQ_HANDLED; | |
1286 | /* check if PCIE PHY Link down */ | |
1287 | if (status & ISR_PHY_LINKDOWN) { | |
1288 | dev_err(&pdev->dev, | |
1289 | "pcie phy linkdown %x\n", status); | |
1290 | if (netif_running(adapter->netdev)) { | |
1291 | /* reset MAC */ | |
1292 | atl1e_irq_reset(adapter); | |
1293 | schedule_work(&adapter->reset_task); | |
1294 | break; | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | /* check if DMA read/write error */ | |
1299 | if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) { | |
1300 | dev_err(&pdev->dev, | |
1301 | "PCIE DMA RW error (status = 0x%x)\n", | |
1302 | status); | |
1303 | atl1e_irq_reset(adapter); | |
1304 | schedule_work(&adapter->reset_task); | |
1305 | break; | |
1306 | } | |
1307 | ||
1308 | if (status & ISR_SMB) | |
1309 | atl1e_update_hw_stats(adapter); | |
1310 | ||
1311 | /* link event */ | |
1312 | if (status & (ISR_GPHY | ISR_MANUAL)) { | |
d3f65f7c | 1313 | netdev->stats.tx_carrier_errors++; |
a6a53252 JY |
1314 | atl1e_link_chg_event(adapter); |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | /* transmit event */ | |
1319 | if (status & ISR_TX_EVENT) | |
1320 | atl1e_clean_tx_irq(adapter); | |
1321 | ||
1322 | if (status & ISR_RX_EVENT) { | |
1323 | /* | |
1324 | * disable rx interrupts, without | |
1325 | * the synchronize_irq bit | |
1326 | */ | |
1327 | AT_WRITE_REG(hw, REG_IMR, | |
1328 | IMR_NORMAL_MASK & ~ISR_RX_EVENT); | |
1329 | AT_WRITE_FLUSH(hw); | |
288379f0 | 1330 | if (likely(napi_schedule_prep( |
a6a53252 | 1331 | &adapter->napi))) |
288379f0 | 1332 | __napi_schedule(&adapter->napi); |
a6a53252 JY |
1333 | } |
1334 | } while (--max_ints > 0); | |
1335 | /* re-enable Interrupt*/ | |
1336 | AT_WRITE_REG(&adapter->hw, REG_ISR, 0); | |
1337 | ||
1338 | return handled; | |
1339 | } | |
1340 | ||
1341 | static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter, | |
1342 | struct sk_buff *skb, struct atl1e_recv_ret_status *prrs) | |
1343 | { | |
1344 | u8 *packet = (u8 *)(prrs + 1); | |
1345 | struct iphdr *iph; | |
1346 | u16 head_len = ETH_HLEN; | |
1347 | u16 pkt_flags; | |
1348 | u16 err_flags; | |
1349 | ||
1350 | skb->ip_summed = CHECKSUM_NONE; | |
1351 | pkt_flags = prrs->pkt_flag; | |
1352 | err_flags = prrs->err_flag; | |
1353 | if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) && | |
1354 | ((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) { | |
1355 | if (pkt_flags & RRS_IS_IPV4) { | |
1356 | if (pkt_flags & RRS_IS_802_3) | |
1357 | head_len += 8; | |
1358 | iph = (struct iphdr *) (packet + head_len); | |
1359 | if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF)) | |
1360 | goto hw_xsum; | |
1361 | } | |
1362 | if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) { | |
1363 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1364 | return; | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | hw_xsum : | |
1369 | return; | |
1370 | } | |
1371 | ||
1372 | static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter, | |
1373 | u8 que) | |
1374 | { | |
1375 | struct atl1e_rx_page_desc *rx_page_desc = | |
1376 | (struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc; | |
1377 | u8 rx_using = rx_page_desc[que].rx_using; | |
1378 | ||
1379 | return (struct atl1e_rx_page *)&(rx_page_desc[que].rx_page[rx_using]); | |
1380 | } | |
1381 | ||
1382 | static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que, | |
1383 | int *work_done, int work_to_do) | |
1384 | { | |
1385 | struct pci_dev *pdev = adapter->pdev; | |
1386 | struct net_device *netdev = adapter->netdev; | |
1387 | struct atl1e_rx_ring *rx_ring = (struct atl1e_rx_ring *) | |
1388 | &adapter->rx_ring; | |
1389 | struct atl1e_rx_page_desc *rx_page_desc = | |
1390 | (struct atl1e_rx_page_desc *) rx_ring->rx_page_desc; | |
1391 | struct sk_buff *skb = NULL; | |
1392 | struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que); | |
1393 | u32 packet_size, write_offset; | |
1394 | struct atl1e_recv_ret_status *prrs; | |
1395 | ||
1396 | write_offset = *(rx_page->write_offset_addr); | |
1397 | if (likely(rx_page->read_offset < write_offset)) { | |
1398 | do { | |
1399 | if (*work_done >= work_to_do) | |
1400 | break; | |
1401 | (*work_done)++; | |
1402 | /* get new packet's rrs */ | |
1403 | prrs = (struct atl1e_recv_ret_status *) (rx_page->addr + | |
1404 | rx_page->read_offset); | |
1405 | /* check sequence number */ | |
1406 | if (prrs->seq_num != rx_page_desc[que].rx_nxseq) { | |
1407 | dev_err(&pdev->dev, | |
1408 | "rx sequence number" | |
1409 | " error (rx=%d) (expect=%d)\n", | |
1410 | prrs->seq_num, | |
1411 | rx_page_desc[que].rx_nxseq); | |
1412 | rx_page_desc[que].rx_nxseq++; | |
1413 | /* just for debug use */ | |
1414 | AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0, | |
1415 | (((u32)prrs->seq_num) << 16) | | |
1416 | rx_page_desc[que].rx_nxseq); | |
1417 | goto fatal_err; | |
1418 | } | |
1419 | rx_page_desc[que].rx_nxseq++; | |
1420 | ||
1421 | /* error packet */ | |
1422 | if (prrs->pkt_flag & RRS_IS_ERR_FRAME) { | |
1423 | if (prrs->err_flag & (RRS_ERR_BAD_CRC | | |
1424 | RRS_ERR_DRIBBLE | RRS_ERR_CODE | | |
1425 | RRS_ERR_TRUNC)) { | |
1426 | /* hardware error, discard this packet*/ | |
1427 | dev_err(&pdev->dev, | |
1428 | "rx packet desc error %x\n", | |
1429 | *((u32 *)prrs + 1)); | |
1430 | goto skip_pkt; | |
1431 | } | |
1432 | } | |
1433 | ||
1434 | packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1435 | RRS_PKT_SIZE_MASK) - 4; /* CRC */ | |
1436 | skb = netdev_alloc_skb(netdev, | |
1437 | packet_size + NET_IP_ALIGN); | |
1438 | if (skb == NULL) { | |
1439 | dev_warn(&pdev->dev, "%s: Memory squeeze," | |
1440 | "deferring packet.\n", netdev->name); | |
1441 | goto skip_pkt; | |
1442 | } | |
1443 | skb_reserve(skb, NET_IP_ALIGN); | |
1444 | skb->dev = netdev; | |
1445 | memcpy(skb->data, (u8 *)(prrs + 1), packet_size); | |
1446 | skb_put(skb, packet_size); | |
1447 | skb->protocol = eth_type_trans(skb, netdev); | |
1448 | atl1e_rx_checksum(adapter, skb, prrs); | |
1449 | ||
1450 | if (unlikely(adapter->vlgrp && | |
1451 | (prrs->pkt_flag & RRS_IS_VLAN_TAG))) { | |
1452 | u16 vlan_tag = (prrs->vtag >> 4) | | |
1453 | ((prrs->vtag & 7) << 13) | | |
1454 | ((prrs->vtag & 8) << 9); | |
1455 | dev_dbg(&pdev->dev, | |
1456 | "RXD VLAN TAG<RRD>=0x%04x\n", | |
1457 | prrs->vtag); | |
1458 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
1459 | vlan_tag); | |
1460 | } else { | |
1461 | netif_receive_skb(skb); | |
1462 | } | |
1463 | ||
a6a53252 JY |
1464 | skip_pkt: |
1465 | /* skip current packet whether it's ok or not. */ | |
1466 | rx_page->read_offset += | |
1467 | (((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) & | |
1468 | RRS_PKT_SIZE_MASK) + | |
1469 | sizeof(struct atl1e_recv_ret_status) + 31) & | |
1470 | 0xFFFFFFE0); | |
1471 | ||
1472 | if (rx_page->read_offset >= rx_ring->page_size) { | |
1473 | /* mark this page clean */ | |
1474 | u16 reg_addr; | |
1475 | u8 rx_using; | |
1476 | ||
1477 | rx_page->read_offset = | |
1478 | *(rx_page->write_offset_addr) = 0; | |
1479 | rx_using = rx_page_desc[que].rx_using; | |
1480 | reg_addr = | |
1481 | atl1e_rx_page_vld_regs[que][rx_using]; | |
1482 | AT_WRITE_REGB(&adapter->hw, reg_addr, 1); | |
1483 | rx_page_desc[que].rx_using ^= 1; | |
1484 | rx_page = atl1e_get_rx_page(adapter, que); | |
1485 | } | |
1486 | write_offset = *(rx_page->write_offset_addr); | |
1487 | } while (rx_page->read_offset < write_offset); | |
1488 | } | |
1489 | ||
1490 | return; | |
1491 | ||
1492 | fatal_err: | |
1493 | if (!test_bit(__AT_DOWN, &adapter->flags)) | |
1494 | schedule_work(&adapter->reset_task); | |
1495 | } | |
1496 | ||
1497 | /* | |
1498 | * atl1e_clean - NAPI Rx polling callback | |
1499 | * @adapter: board private structure | |
1500 | */ | |
1501 | static int atl1e_clean(struct napi_struct *napi, int budget) | |
1502 | { | |
1503 | struct atl1e_adapter *adapter = | |
1504 | container_of(napi, struct atl1e_adapter, napi); | |
a6a53252 JY |
1505 | struct pci_dev *pdev = adapter->pdev; |
1506 | u32 imr_data; | |
1507 | int work_done = 0; | |
1508 | ||
1509 | /* Keep link state information with original netdev */ | |
1510 | if (!netif_carrier_ok(adapter->netdev)) | |
1511 | goto quit_polling; | |
1512 | ||
1513 | atl1e_clean_rx_irq(adapter, 0, &work_done, budget); | |
1514 | ||
1515 | /* If no Tx and not enough Rx work done, exit the polling mode */ | |
1516 | if (work_done < budget) { | |
1517 | quit_polling: | |
288379f0 | 1518 | napi_complete(napi); |
a6a53252 JY |
1519 | imr_data = AT_READ_REG(&adapter->hw, REG_IMR); |
1520 | AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT); | |
1521 | /* test debug */ | |
1522 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1523 | atomic_dec(&adapter->irq_sem); | |
1524 | dev_err(&pdev->dev, | |
1525 | "atl1e_clean is called when AT_DOWN\n"); | |
1526 | } | |
1527 | /* reenable RX intr */ | |
1528 | /*atl1e_irq_enable(adapter); */ | |
1529 | ||
1530 | } | |
1531 | return work_done; | |
1532 | } | |
1533 | ||
1534 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1535 | ||
1536 | /* | |
1537 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
1538 | * without having to re-enable interrupts. It's not called while | |
1539 | * the interrupt routine is executing. | |
1540 | */ | |
1541 | static void atl1e_netpoll(struct net_device *netdev) | |
1542 | { | |
1543 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1544 | ||
1545 | disable_irq(adapter->pdev->irq); | |
1546 | atl1e_intr(adapter->pdev->irq, netdev); | |
1547 | enable_irq(adapter->pdev->irq); | |
1548 | } | |
1549 | #endif | |
1550 | ||
1551 | static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter) | |
1552 | { | |
1553 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1554 | u16 next_to_use = 0; | |
1555 | u16 next_to_clean = 0; | |
1556 | ||
1557 | next_to_clean = atomic_read(&tx_ring->next_to_clean); | |
1558 | next_to_use = tx_ring->next_to_use; | |
1559 | ||
1560 | return (u16)(next_to_clean > next_to_use) ? | |
1561 | (next_to_clean - next_to_use - 1) : | |
1562 | (tx_ring->count + next_to_clean - next_to_use - 1); | |
1563 | } | |
1564 | ||
1565 | /* | |
1566 | * get next usable tpd | |
1567 | * Note: should call atl1e_tdp_avail to make sure | |
1568 | * there is enough tpd to use | |
1569 | */ | |
1570 | static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter) | |
1571 | { | |
1572 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1573 | u16 next_to_use = 0; | |
1574 | ||
1575 | next_to_use = tx_ring->next_to_use; | |
1576 | if (++tx_ring->next_to_use == tx_ring->count) | |
1577 | tx_ring->next_to_use = 0; | |
1578 | ||
1579 | memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc)); | |
1580 | return (struct atl1e_tpd_desc *)&tx_ring->desc[next_to_use]; | |
1581 | } | |
1582 | ||
1583 | static struct atl1e_tx_buffer * | |
1584 | atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd) | |
1585 | { | |
1586 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1587 | ||
1588 | return &tx_ring->tx_buffer[tpd - tx_ring->desc]; | |
1589 | } | |
1590 | ||
1591 | /* Calculate the transmit packet descript needed*/ | |
1592 | static u16 atl1e_cal_tdp_req(const struct sk_buff *skb) | |
1593 | { | |
1594 | int i = 0; | |
1595 | u16 tpd_req = 1; | |
1596 | u16 fg_size = 0; | |
1597 | u16 proto_hdr_len = 0; | |
1598 | ||
1599 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1600 | fg_size = skb_shinfo(skb)->frags[i].size; | |
1601 | tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT); | |
1602 | } | |
1603 | ||
1604 | if (skb_is_gso(skb)) { | |
17d0cdfa | 1605 | if (skb->protocol == htons(ETH_P_IP) || |
a6a53252 JY |
1606 | (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) { |
1607 | proto_hdr_len = skb_transport_offset(skb) + | |
1608 | tcp_hdrlen(skb); | |
1609 | if (proto_hdr_len < skb_headlen(skb)) { | |
1610 | tpd_req += ((skb_headlen(skb) - proto_hdr_len + | |
1611 | MAX_TX_BUF_LEN - 1) >> | |
1612 | MAX_TX_BUF_SHIFT); | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | } | |
1617 | return tpd_req; | |
1618 | } | |
1619 | ||
1620 | static int atl1e_tso_csum(struct atl1e_adapter *adapter, | |
1621 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1622 | { | |
1623 | struct pci_dev *pdev = adapter->pdev; | |
1624 | u8 hdr_len; | |
1625 | u32 real_len; | |
1626 | unsigned short offload_type; | |
1627 | int err; | |
1628 | ||
1629 | if (skb_is_gso(skb)) { | |
1630 | if (skb_header_cloned(skb)) { | |
1631 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1632 | if (unlikely(err)) | |
1633 | return -1; | |
1634 | } | |
1635 | offload_type = skb_shinfo(skb)->gso_type; | |
1636 | ||
1637 | if (offload_type & SKB_GSO_TCPV4) { | |
1638 | real_len = (((unsigned char *)ip_hdr(skb) - skb->data) | |
1639 | + ntohs(ip_hdr(skb)->tot_len)); | |
1640 | ||
1641 | if (real_len < skb->len) | |
1642 | pskb_trim(skb, real_len); | |
1643 | ||
1644 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1645 | if (unlikely(skb->len == hdr_len)) { | |
1646 | /* only xsum need */ | |
1647 | dev_warn(&pdev->dev, | |
1648 | "IPV4 tso with zero data??\n"); | |
1649 | goto check_sum; | |
1650 | } else { | |
1651 | ip_hdr(skb)->check = 0; | |
1652 | ip_hdr(skb)->tot_len = 0; | |
1653 | tcp_hdr(skb)->check = ~csum_tcpudp_magic( | |
1654 | ip_hdr(skb)->saddr, | |
1655 | ip_hdr(skb)->daddr, | |
1656 | 0, IPPROTO_TCP, 0); | |
1657 | tpd->word3 |= (ip_hdr(skb)->ihl & | |
1658 | TDP_V4_IPHL_MASK) << | |
1659 | TPD_V4_IPHL_SHIFT; | |
1660 | tpd->word3 |= ((tcp_hdrlen(skb) >> 2) & | |
1661 | TPD_TCPHDRLEN_MASK) << | |
1662 | TPD_TCPHDRLEN_SHIFT; | |
1663 | tpd->word3 |= ((skb_shinfo(skb)->gso_size) & | |
1664 | TPD_MSS_MASK) << TPD_MSS_SHIFT; | |
1665 | tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; | |
1666 | } | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | if (offload_type & SKB_GSO_TCPV6) { | |
1671 | real_len = (((unsigned char *)ipv6_hdr(skb) - skb->data) | |
1672 | + ntohs(ipv6_hdr(skb)->payload_len)); | |
1673 | if (real_len < skb->len) | |
1674 | pskb_trim(skb, real_len); | |
1675 | ||
1676 | /* check payload == 0 byte ? */ | |
1677 | hdr_len = (skb_transport_offset(skb) + tcp_hdrlen(skb)); | |
1678 | if (unlikely(skb->len == hdr_len)) { | |
1679 | /* only xsum need */ | |
1680 | dev_warn(&pdev->dev, | |
1681 | "IPV6 tso with zero data??\n"); | |
1682 | goto check_sum; | |
1683 | } else { | |
1684 | tcp_hdr(skb)->check = ~csum_ipv6_magic( | |
1685 | &ipv6_hdr(skb)->saddr, | |
1686 | &ipv6_hdr(skb)->daddr, | |
1687 | 0, IPPROTO_TCP, 0); | |
1688 | tpd->word3 |= 1 << TPD_IP_VERSION_SHIFT; | |
1689 | hdr_len >>= 1; | |
1690 | tpd->word3 |= (hdr_len & TPD_V6_IPHLLO_MASK) << | |
1691 | TPD_V6_IPHLLO_SHIFT; | |
1692 | tpd->word3 |= ((hdr_len >> 3) & | |
1693 | TPD_V6_IPHLHI_MASK) << | |
1694 | TPD_V6_IPHLHI_SHIFT; | |
1695 | tpd->word3 |= (tcp_hdrlen(skb) >> 2 & | |
1696 | TPD_TCPHDRLEN_MASK) << | |
1697 | TPD_TCPHDRLEN_SHIFT; | |
1698 | tpd->word3 |= ((skb_shinfo(skb)->gso_size) & | |
1699 | TPD_MSS_MASK) << TPD_MSS_SHIFT; | |
1700 | tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT; | |
1701 | } | |
1702 | } | |
1703 | return 0; | |
1704 | } | |
1705 | ||
1706 | check_sum: | |
1707 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { | |
1708 | u8 css, cso; | |
1709 | ||
1710 | cso = skb_transport_offset(skb); | |
1711 | if (unlikely(cso & 0x1)) { | |
1712 | dev_err(&adapter->pdev->dev, | |
1713 | "pay load offset should not ant event number\n"); | |
1714 | return -1; | |
1715 | } else { | |
1716 | css = cso + skb->csum_offset; | |
1717 | tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) << | |
1718 | TPD_PLOADOFFSET_SHIFT; | |
1719 | tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) << | |
1720 | TPD_CCSUMOFFSET_SHIFT; | |
1721 | tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT; | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | return 0; | |
1726 | } | |
1727 | ||
1728 | static void atl1e_tx_map(struct atl1e_adapter *adapter, | |
1729 | struct sk_buff *skb, struct atl1e_tpd_desc *tpd) | |
1730 | { | |
1731 | struct atl1e_tpd_desc *use_tpd = NULL; | |
1732 | struct atl1e_tx_buffer *tx_buffer = NULL; | |
1733 | u16 buf_len = skb->len - skb->data_len; | |
1734 | u16 map_len = 0; | |
1735 | u16 mapped_len = 0; | |
1736 | u16 hdr_len = 0; | |
1737 | u16 nr_frags; | |
1738 | u16 f; | |
1739 | int segment; | |
1740 | ||
1741 | nr_frags = skb_shinfo(skb)->nr_frags; | |
1742 | segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK; | |
1743 | if (segment) { | |
1744 | /* TSO */ | |
1745 | map_len = hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); | |
1746 | use_tpd = tpd; | |
1747 | ||
1748 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1749 | tx_buffer->length = map_len; | |
1750 | tx_buffer->dma = pci_map_single(adapter->pdev, | |
1751 | skb->data, hdr_len, PCI_DMA_TODEVICE); | |
1752 | mapped_len += map_len; | |
1753 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1754 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1755 | ((cpu_to_le32(tx_buffer->length) & | |
1756 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1757 | } | |
1758 | ||
1759 | while (mapped_len < buf_len) { | |
1760 | /* mapped_len == 0, means we should use the first tpd, | |
1761 | which is given by caller */ | |
1762 | if (mapped_len == 0) { | |
1763 | use_tpd = tpd; | |
1764 | } else { | |
1765 | use_tpd = atl1e_get_tpd(adapter); | |
1766 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1767 | } | |
1768 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
1769 | tx_buffer->skb = NULL; | |
1770 | ||
1771 | tx_buffer->length = map_len = | |
1772 | ((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ? | |
1773 | MAX_TX_BUF_LEN : (buf_len - mapped_len); | |
1774 | tx_buffer->dma = | |
1775 | pci_map_single(adapter->pdev, skb->data + mapped_len, | |
1776 | map_len, PCI_DMA_TODEVICE); | |
1777 | mapped_len += map_len; | |
1778 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1779 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1780 | ((cpu_to_le32(tx_buffer->length) & | |
1781 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1782 | } | |
1783 | ||
1784 | for (f = 0; f < nr_frags; f++) { | |
1785 | struct skb_frag_struct *frag; | |
1786 | u16 i; | |
1787 | u16 seg_num; | |
1788 | ||
1789 | frag = &skb_shinfo(skb)->frags[f]; | |
1790 | buf_len = frag->size; | |
1791 | ||
1792 | seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN; | |
1793 | for (i = 0; i < seg_num; i++) { | |
1794 | use_tpd = atl1e_get_tpd(adapter); | |
1795 | memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc)); | |
1796 | ||
1797 | tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd); | |
0ee904c3 | 1798 | BUG_ON(tx_buffer->skb); |
a6a53252 JY |
1799 | |
1800 | tx_buffer->skb = NULL; | |
1801 | tx_buffer->length = | |
1802 | (buf_len > MAX_TX_BUF_LEN) ? | |
1803 | MAX_TX_BUF_LEN : buf_len; | |
1804 | buf_len -= tx_buffer->length; | |
1805 | ||
1806 | tx_buffer->dma = | |
1807 | pci_map_page(adapter->pdev, frag->page, | |
1808 | frag->page_offset + | |
1809 | (i * MAX_TX_BUF_LEN), | |
1810 | tx_buffer->length, | |
1811 | PCI_DMA_TODEVICE); | |
1812 | use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); | |
1813 | use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | | |
1814 | ((cpu_to_le32(tx_buffer->length) & | |
1815 | TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT); | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK) | |
1820 | /* note this one is a tcp header */ | |
1821 | tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT; | |
1822 | /* The last tpd */ | |
1823 | ||
1824 | use_tpd->word3 |= 1 << TPD_EOP_SHIFT; | |
1825 | /* The last buffer info contain the skb address, | |
1826 | so it will be free after unmap */ | |
1827 | tx_buffer->skb = skb; | |
1828 | } | |
1829 | ||
1830 | static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count, | |
1831 | struct atl1e_tpd_desc *tpd) | |
1832 | { | |
1833 | struct atl1e_tx_ring *tx_ring = &adapter->tx_ring; | |
1834 | /* Force memory writes to complete before letting h/w | |
1835 | * know there are new descriptors to fetch. (Only | |
1836 | * applicable for weak-ordered memory model archs, | |
1837 | * such as IA-64). */ | |
1838 | wmb(); | |
1839 | AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use); | |
1840 | } | |
1841 | ||
1842 | static int atl1e_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1843 | { | |
1844 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
1845 | unsigned long flags; | |
1846 | u16 tpd_req = 1; | |
1847 | struct atl1e_tpd_desc *tpd; | |
1848 | ||
1849 | if (test_bit(__AT_DOWN, &adapter->flags)) { | |
1850 | dev_kfree_skb_any(skb); | |
1851 | return NETDEV_TX_OK; | |
1852 | } | |
1853 | ||
1854 | if (unlikely(skb->len <= 0)) { | |
1855 | dev_kfree_skb_any(skb); | |
1856 | return NETDEV_TX_OK; | |
1857 | } | |
1858 | tpd_req = atl1e_cal_tdp_req(skb); | |
1859 | if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) | |
1860 | return NETDEV_TX_LOCKED; | |
1861 | ||
1862 | if (atl1e_tpd_avail(adapter) < tpd_req) { | |
1863 | /* no enough descriptor, just stop queue */ | |
1864 | netif_stop_queue(netdev); | |
1865 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1866 | return NETDEV_TX_BUSY; | |
1867 | } | |
1868 | ||
1869 | tpd = atl1e_get_tpd(adapter); | |
1870 | ||
1871 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
1872 | u16 vlan_tag = vlan_tx_tag_get(skb); | |
1873 | u16 atl1e_vlan_tag; | |
1874 | ||
1875 | tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT; | |
1876 | AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag); | |
1877 | tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) << | |
1878 | TPD_VLAN_SHIFT; | |
1879 | } | |
1880 | ||
17d0cdfa | 1881 | if (skb->protocol == htons(ETH_P_8021Q)) |
a6a53252 JY |
1882 | tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT; |
1883 | ||
1884 | if (skb_network_offset(skb) != ETH_HLEN) | |
1885 | tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */ | |
1886 | ||
1887 | /* do TSO and check sum */ | |
1888 | if (atl1e_tso_csum(adapter, skb, tpd) != 0) { | |
1889 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1890 | dev_kfree_skb_any(skb); | |
1891 | return NETDEV_TX_OK; | |
1892 | } | |
1893 | ||
1894 | atl1e_tx_map(adapter, skb, tpd); | |
1895 | atl1e_tx_queue(adapter, tpd_req, tpd); | |
1896 | ||
cdd0db05 | 1897 | netdev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */ |
a6a53252 JY |
1898 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
1899 | return NETDEV_TX_OK; | |
1900 | } | |
1901 | ||
1902 | static void atl1e_free_irq(struct atl1e_adapter *adapter) | |
1903 | { | |
1904 | struct net_device *netdev = adapter->netdev; | |
1905 | ||
1906 | free_irq(adapter->pdev->irq, netdev); | |
1907 | ||
1908 | if (adapter->have_msi) | |
1909 | pci_disable_msi(adapter->pdev); | |
1910 | } | |
1911 | ||
1912 | static int atl1e_request_irq(struct atl1e_adapter *adapter) | |
1913 | { | |
1914 | struct pci_dev *pdev = adapter->pdev; | |
1915 | struct net_device *netdev = adapter->netdev; | |
1916 | int flags = 0; | |
1917 | int err = 0; | |
1918 | ||
1919 | adapter->have_msi = true; | |
1920 | err = pci_enable_msi(adapter->pdev); | |
1921 | if (err) { | |
1922 | dev_dbg(&pdev->dev, | |
1923 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
1924 | adapter->have_msi = false; | |
1925 | } else | |
1926 | netdev->irq = pdev->irq; | |
1927 | ||
1928 | ||
1929 | if (!adapter->have_msi) | |
1930 | flags |= IRQF_SHARED; | |
1931 | err = request_irq(adapter->pdev->irq, &atl1e_intr, flags, | |
1932 | netdev->name, netdev); | |
1933 | if (err) { | |
1934 | dev_dbg(&pdev->dev, | |
1935 | "Unable to allocate interrupt Error: %d\n", err); | |
1936 | if (adapter->have_msi) | |
1937 | pci_disable_msi(adapter->pdev); | |
1938 | return err; | |
1939 | } | |
1940 | dev_dbg(&pdev->dev, "atl1e_request_irq OK\n"); | |
1941 | return err; | |
1942 | } | |
1943 | ||
1944 | int atl1e_up(struct atl1e_adapter *adapter) | |
1945 | { | |
1946 | struct net_device *netdev = adapter->netdev; | |
1947 | int err = 0; | |
1948 | u32 val; | |
1949 | ||
1950 | /* hardware has been reset, we need to reload some things */ | |
1951 | err = atl1e_init_hw(&adapter->hw); | |
1952 | if (err) { | |
1953 | err = -EIO; | |
1954 | return err; | |
1955 | } | |
1956 | atl1e_init_ring_ptrs(adapter); | |
1957 | atl1e_set_multi(netdev); | |
1958 | atl1e_restore_vlan(adapter); | |
1959 | ||
1960 | if (atl1e_configure(adapter)) { | |
1961 | err = -EIO; | |
1962 | goto err_up; | |
1963 | } | |
1964 | ||
1965 | clear_bit(__AT_DOWN, &adapter->flags); | |
1966 | napi_enable(&adapter->napi); | |
1967 | atl1e_irq_enable(adapter); | |
1968 | val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL); | |
1969 | AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL, | |
1970 | val | MASTER_CTRL_MANUAL_INT); | |
1971 | ||
1972 | err_up: | |
1973 | return err; | |
1974 | } | |
1975 | ||
1976 | void atl1e_down(struct atl1e_adapter *adapter) | |
1977 | { | |
1978 | struct net_device *netdev = adapter->netdev; | |
1979 | ||
1980 | /* signal that we're down so the interrupt handler does not | |
1981 | * reschedule our watchdog timer */ | |
1982 | set_bit(__AT_DOWN, &adapter->flags); | |
1983 | ||
1984 | #ifdef NETIF_F_LLTX | |
1985 | netif_stop_queue(netdev); | |
1986 | #else | |
1987 | netif_tx_disable(netdev); | |
1988 | #endif | |
1989 | ||
1990 | /* reset MAC to disable all RX/TX */ | |
1991 | atl1e_reset_hw(&adapter->hw); | |
1992 | msleep(1); | |
1993 | ||
1994 | napi_disable(&adapter->napi); | |
1995 | atl1e_del_timer(adapter); | |
1996 | atl1e_irq_disable(adapter); | |
1997 | ||
1998 | netif_carrier_off(netdev); | |
1999 | adapter->link_speed = SPEED_0; | |
2000 | adapter->link_duplex = -1; | |
2001 | atl1e_clean_tx_ring(adapter); | |
2002 | atl1e_clean_rx_ring(adapter); | |
2003 | } | |
2004 | ||
2005 | /* | |
2006 | * atl1e_open - Called when a network interface is made active | |
2007 | * @netdev: network interface device structure | |
2008 | * | |
2009 | * Returns 0 on success, negative value on failure | |
2010 | * | |
2011 | * The open entry point is called when a network interface is made | |
2012 | * active by the system (IFF_UP). At this point all resources needed | |
2013 | * for transmit and receive operations are allocated, the interrupt | |
2014 | * handler is registered with the OS, the watchdog timer is started, | |
2015 | * and the stack is notified that the interface is ready. | |
2016 | */ | |
2017 | static int atl1e_open(struct net_device *netdev) | |
2018 | { | |
2019 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2020 | int err; | |
2021 | ||
2022 | /* disallow open during test */ | |
2023 | if (test_bit(__AT_TESTING, &adapter->flags)) | |
2024 | return -EBUSY; | |
2025 | ||
2026 | /* allocate rx/tx dma buffer & descriptors */ | |
2027 | atl1e_init_ring_resources(adapter); | |
2028 | err = atl1e_setup_ring_resources(adapter); | |
2029 | if (unlikely(err)) | |
2030 | return err; | |
2031 | ||
2032 | err = atl1e_request_irq(adapter); | |
2033 | if (unlikely(err)) | |
2034 | goto err_req_irq; | |
2035 | ||
2036 | err = atl1e_up(adapter); | |
2037 | if (unlikely(err)) | |
2038 | goto err_up; | |
2039 | ||
2040 | return 0; | |
2041 | ||
2042 | err_up: | |
2043 | atl1e_free_irq(adapter); | |
2044 | err_req_irq: | |
2045 | atl1e_free_ring_resources(adapter); | |
2046 | atl1e_reset_hw(&adapter->hw); | |
2047 | ||
2048 | return err; | |
2049 | } | |
2050 | ||
2051 | /* | |
2052 | * atl1e_close - Disables a network interface | |
2053 | * @netdev: network interface device structure | |
2054 | * | |
2055 | * Returns 0, this is not allowed to fail | |
2056 | * | |
2057 | * The close entry point is called when an interface is de-activated | |
2058 | * by the OS. The hardware is still under the drivers control, but | |
2059 | * needs to be disabled. A global MAC reset is issued to stop the | |
2060 | * hardware, and all transmit and receive resources are freed. | |
2061 | */ | |
2062 | static int atl1e_close(struct net_device *netdev) | |
2063 | { | |
2064 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2065 | ||
2066 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2067 | atl1e_down(adapter); | |
2068 | atl1e_free_irq(adapter); | |
2069 | atl1e_free_ring_resources(adapter); | |
2070 | ||
2071 | return 0; | |
2072 | } | |
2073 | ||
a6a53252 JY |
2074 | static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state) |
2075 | { | |
2076 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2077 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2078 | struct atl1e_hw *hw = &adapter->hw; | |
2079 | u32 ctrl = 0; | |
2080 | u32 mac_ctrl_data = 0; | |
2081 | u32 wol_ctrl_data = 0; | |
2082 | u16 mii_advertise_data = 0; | |
2083 | u16 mii_bmsr_data = 0; | |
2084 | u16 mii_intr_status_data = 0; | |
2085 | u32 wufc = adapter->wol; | |
2086 | u32 i; | |
2087 | #ifdef CONFIG_PM | |
2088 | int retval = 0; | |
2089 | #endif | |
2090 | ||
2091 | if (netif_running(netdev)) { | |
2092 | WARN_ON(test_bit(__AT_RESETTING, &adapter->flags)); | |
2093 | atl1e_down(adapter); | |
2094 | } | |
2095 | netif_device_detach(netdev); | |
2096 | ||
2097 | #ifdef CONFIG_PM | |
2098 | retval = pci_save_state(pdev); | |
2099 | if (retval) | |
2100 | return retval; | |
2101 | #endif | |
2102 | ||
2103 | if (wufc) { | |
2104 | /* get link status */ | |
2105 | atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); | |
2106 | atl1e_read_phy_reg(hw, MII_BMSR, (u16 *)&mii_bmsr_data); | |
2107 | ||
2108 | mii_advertise_data = MII_AR_10T_HD_CAPS; | |
2109 | ||
2110 | if ((atl1e_write_phy_reg(hw, MII_AT001_CR, 0) != 0) || | |
2111 | (atl1e_write_phy_reg(hw, | |
2112 | MII_ADVERTISE, mii_advertise_data) != 0) || | |
2113 | (atl1e_phy_commit(hw)) != 0) { | |
2114 | dev_dbg(&pdev->dev, "set phy register failed\n"); | |
2115 | goto wol_dis; | |
2116 | } | |
2117 | ||
2118 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2119 | ||
2120 | /* turn on magic packet wol */ | |
2121 | if (wufc & AT_WUFC_MAG) | |
2122 | wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN; | |
2123 | ||
2124 | if (wufc & AT_WUFC_LNKC) { | |
2125 | /* if orignal link status is link, just wait for retrive link */ | |
2126 | if (mii_bmsr_data & BMSR_LSTATUS) { | |
2127 | for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) { | |
2128 | msleep(100); | |
2129 | atl1e_read_phy_reg(hw, MII_BMSR, | |
2130 | (u16 *)&mii_bmsr_data); | |
2131 | if (mii_bmsr_data & BMSR_LSTATUS) | |
2132 | break; | |
2133 | } | |
2134 | ||
2135 | if ((mii_bmsr_data & BMSR_LSTATUS) == 0) | |
2136 | dev_dbg(&pdev->dev, | |
2137 | "%s: Link may change" | |
2138 | "when suspend\n", | |
2139 | atl1e_driver_name); | |
2140 | } | |
2141 | wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN; | |
2142 | /* only link up can wake up */ | |
2143 | if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) { | |
2144 | dev_dbg(&pdev->dev, "%s: read write phy " | |
2145 | "register failed.\n", | |
2146 | atl1e_driver_name); | |
2147 | goto wol_dis; | |
2148 | } | |
2149 | } | |
2150 | /* clear phy interrupt */ | |
2151 | atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data); | |
2152 | /* Config MAC Ctrl register */ | |
2153 | mac_ctrl_data = MAC_CTRL_RX_EN; | |
2154 | /* set to 10/100M halt duplex */ | |
2155 | mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT; | |
2156 | mac_ctrl_data |= (((u32)adapter->hw.preamble_len & | |
2157 | MAC_CTRL_PRMLEN_MASK) << | |
2158 | MAC_CTRL_PRMLEN_SHIFT); | |
2159 | ||
2160 | if (adapter->vlgrp) | |
2161 | mac_ctrl_data |= MAC_CTRL_RMV_VLAN; | |
2162 | ||
2163 | /* magic packet maybe Broadcast&multicast&Unicast frame */ | |
2164 | if (wufc & AT_WUFC_MAG) | |
2165 | mac_ctrl_data |= MAC_CTRL_BC_EN; | |
2166 | ||
2167 | dev_dbg(&pdev->dev, | |
2168 | "%s: suspend MAC=0x%x\n", | |
2169 | atl1e_driver_name, mac_ctrl_data); | |
2170 | ||
2171 | AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data); | |
2172 | AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data); | |
2173 | /* pcie patch */ | |
2174 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2175 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2176 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2177 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); | |
2178 | goto suspend_exit; | |
2179 | } | |
2180 | wol_dis: | |
2181 | ||
2182 | /* WOL disabled */ | |
2183 | AT_WRITE_REG(hw, REG_WOL_CTRL, 0); | |
2184 | ||
2185 | /* pcie patch */ | |
2186 | ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC); | |
2187 | ctrl |= PCIE_PHYMISC_FORCE_RCV_DET; | |
2188 | AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl); | |
2189 | ||
2190 | atl1e_force_ps(hw); | |
2191 | hw->phy_configured = false; /* re-init PHY when resume */ | |
2192 | ||
2193 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); | |
2194 | ||
2195 | suspend_exit: | |
2196 | ||
2197 | if (netif_running(netdev)) | |
2198 | atl1e_free_irq(adapter); | |
2199 | ||
2200 | pci_disable_device(pdev); | |
2201 | ||
2202 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2203 | ||
2204 | return 0; | |
2205 | } | |
2206 | ||
d6f8aa85 | 2207 | #ifdef CONFIG_PM |
a6a53252 JY |
2208 | static int atl1e_resume(struct pci_dev *pdev) |
2209 | { | |
2210 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2211 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2212 | u32 err; | |
2213 | ||
2214 | pci_set_power_state(pdev, PCI_D0); | |
2215 | pci_restore_state(pdev); | |
2216 | ||
2217 | err = pci_enable_device(pdev); | |
2218 | if (err) { | |
2219 | dev_err(&pdev->dev, "ATL1e: Cannot enable PCI" | |
2220 | " device from suspend\n"); | |
2221 | return err; | |
2222 | } | |
2223 | ||
2224 | pci_set_master(pdev); | |
2225 | ||
2226 | AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */ | |
2227 | ||
2228 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2229 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2230 | ||
2231 | AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0); | |
2232 | ||
50f684b9 | 2233 | if (netif_running(netdev)) { |
a6a53252 JY |
2234 | err = atl1e_request_irq(adapter); |
2235 | if (err) | |
2236 | return err; | |
50f684b9 | 2237 | } |
a6a53252 JY |
2238 | |
2239 | atl1e_reset_hw(&adapter->hw); | |
2240 | ||
2241 | if (netif_running(netdev)) | |
2242 | atl1e_up(adapter); | |
2243 | ||
2244 | netif_device_attach(netdev); | |
2245 | ||
2246 | return 0; | |
2247 | } | |
2248 | #endif | |
2249 | ||
2250 | static void atl1e_shutdown(struct pci_dev *pdev) | |
2251 | { | |
2252 | atl1e_suspend(pdev, PMSG_SUSPEND); | |
2253 | } | |
2254 | ||
1e058ab5 SH |
2255 | static const struct net_device_ops atl1e_netdev_ops = { |
2256 | .ndo_open = atl1e_open, | |
2257 | .ndo_stop = atl1e_close, | |
00829823 | 2258 | .ndo_start_xmit = atl1e_xmit_frame, |
1e058ab5 SH |
2259 | .ndo_get_stats = atl1e_get_stats, |
2260 | .ndo_set_multicast_list = atl1e_set_multi, | |
2261 | .ndo_validate_addr = eth_validate_addr, | |
2262 | .ndo_set_mac_address = atl1e_set_mac_addr, | |
2263 | .ndo_change_mtu = atl1e_change_mtu, | |
2264 | .ndo_do_ioctl = atl1e_ioctl, | |
2265 | .ndo_tx_timeout = atl1e_tx_timeout, | |
2266 | .ndo_vlan_rx_register = atl1e_vlan_rx_register, | |
2267 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2268 | .ndo_poll_controller = atl1e_netpoll, | |
2269 | #endif | |
2270 | ||
2271 | }; | |
2272 | ||
a6a53252 JY |
2273 | static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev) |
2274 | { | |
2275 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2276 | pci_set_drvdata(pdev, netdev); | |
2277 | ||
2278 | netdev->irq = pdev->irq; | |
1e058ab5 | 2279 | netdev->netdev_ops = &atl1e_netdev_ops; |
00829823 | 2280 | |
a6a53252 | 2281 | netdev->watchdog_timeo = AT_TX_WATCHDOG; |
a6a53252 JY |
2282 | atl1e_set_ethtool_ops(netdev); |
2283 | ||
2284 | netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | | |
2285 | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX; | |
2286 | netdev->features |= NETIF_F_LLTX; | |
2287 | netdev->features |= NETIF_F_TSO; | |
2288 | netdev->features |= NETIF_F_TSO6; | |
2289 | ||
2290 | return 0; | |
2291 | } | |
2292 | ||
2293 | /* | |
2294 | * atl1e_probe - Device Initialization Routine | |
2295 | * @pdev: PCI device information struct | |
2296 | * @ent: entry in atl1e_pci_tbl | |
2297 | * | |
2298 | * Returns 0 on success, negative on failure | |
2299 | * | |
2300 | * atl1e_probe initializes an adapter identified by a pci_dev structure. | |
2301 | * The OS initialization, configuring of the adapter private structure, | |
2302 | * and a hardware reset occur. | |
2303 | */ | |
2304 | static int __devinit atl1e_probe(struct pci_dev *pdev, | |
2305 | const struct pci_device_id *ent) | |
2306 | { | |
2307 | struct net_device *netdev; | |
2308 | struct atl1e_adapter *adapter = NULL; | |
2309 | static int cards_found; | |
2310 | ||
2311 | int err = 0; | |
2312 | ||
2313 | err = pci_enable_device(pdev); | |
2314 | if (err) { | |
2315 | dev_err(&pdev->dev, "cannot enable PCI device\n"); | |
2316 | return err; | |
2317 | } | |
2318 | ||
2319 | /* | |
2320 | * The atl1e chip can DMA to 64-bit addresses, but it uses a single | |
2321 | * shared register for the high 32 bits, so only a single, aligned, | |
2322 | * 4 GB physical address range can be used at a time. | |
2323 | * | |
2324 | * Supporting 64-bit DMA on this hardware is more trouble than it's | |
2325 | * worth. It is far easier to limit to 32-bit DMA than update | |
2326 | * various kernel subsystems to support the mechanics required by a | |
2327 | * fixed-high-32-bit system. | |
2328 | */ | |
284901a9 YH |
2329 | if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) || |
2330 | (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) { | |
a6a53252 JY |
2331 | dev_err(&pdev->dev, "No usable DMA configuration,aborting\n"); |
2332 | goto err_dma; | |
2333 | } | |
2334 | ||
2335 | err = pci_request_regions(pdev, atl1e_driver_name); | |
2336 | if (err) { | |
2337 | dev_err(&pdev->dev, "cannot obtain PCI resources\n"); | |
2338 | goto err_pci_reg; | |
2339 | } | |
2340 | ||
2341 | pci_set_master(pdev); | |
2342 | ||
2343 | netdev = alloc_etherdev(sizeof(struct atl1e_adapter)); | |
2344 | if (netdev == NULL) { | |
2345 | err = -ENOMEM; | |
2346 | dev_err(&pdev->dev, "etherdev alloc failed\n"); | |
2347 | goto err_alloc_etherdev; | |
2348 | } | |
2349 | ||
2350 | err = atl1e_init_netdev(netdev, pdev); | |
2351 | if (err) { | |
2352 | dev_err(&pdev->dev, "init netdevice failed\n"); | |
2353 | goto err_init_netdev; | |
2354 | } | |
2355 | adapter = netdev_priv(netdev); | |
2356 | adapter->bd_number = cards_found; | |
2357 | adapter->netdev = netdev; | |
2358 | adapter->pdev = pdev; | |
2359 | adapter->hw.adapter = adapter; | |
2360 | adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0); | |
2361 | if (!adapter->hw.hw_addr) { | |
2362 | err = -EIO; | |
2363 | dev_err(&pdev->dev, "cannot map device registers\n"); | |
2364 | goto err_ioremap; | |
2365 | } | |
2366 | netdev->base_addr = (unsigned long)adapter->hw.hw_addr; | |
2367 | ||
2368 | /* init mii data */ | |
2369 | adapter->mii.dev = netdev; | |
2370 | adapter->mii.mdio_read = atl1e_mdio_read; | |
2371 | adapter->mii.mdio_write = atl1e_mdio_write; | |
2372 | adapter->mii.phy_id_mask = 0x1f; | |
2373 | adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK; | |
2374 | ||
2375 | netif_napi_add(netdev, &adapter->napi, atl1e_clean, 64); | |
2376 | ||
2377 | init_timer(&adapter->phy_config_timer); | |
2378 | adapter->phy_config_timer.function = &atl1e_phy_config; | |
2379 | adapter->phy_config_timer.data = (unsigned long) adapter; | |
2380 | ||
2381 | /* get user settings */ | |
2382 | atl1e_check_options(adapter); | |
2383 | /* | |
2384 | * Mark all PCI regions associated with PCI device | |
2385 | * pdev as being reserved by owner atl1e_driver_name | |
2386 | * Enables bus-mastering on the device and calls | |
2387 | * pcibios_set_master to do the needed arch specific settings | |
2388 | */ | |
2389 | atl1e_setup_pcicmd(pdev); | |
2390 | /* setup the private structure */ | |
2391 | err = atl1e_sw_init(adapter); | |
2392 | if (err) { | |
2393 | dev_err(&pdev->dev, "net device private data init failed\n"); | |
2394 | goto err_sw_init; | |
2395 | } | |
2396 | ||
2397 | /* Init GPHY as early as possible due to power saving issue */ | |
a6a53252 | 2398 | atl1e_phy_init(&adapter->hw); |
a6a53252 JY |
2399 | /* reset the controller to |
2400 | * put the device in a known good starting state */ | |
2401 | err = atl1e_reset_hw(&adapter->hw); | |
2402 | if (err) { | |
2403 | err = -EIO; | |
2404 | goto err_reset; | |
2405 | } | |
2406 | ||
2407 | if (atl1e_read_mac_addr(&adapter->hw) != 0) { | |
2408 | err = -EIO; | |
2409 | dev_err(&pdev->dev, "get mac address failed\n"); | |
2410 | goto err_eeprom; | |
2411 | } | |
2412 | ||
2413 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2414 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); | |
2415 | dev_dbg(&pdev->dev, "mac address : %02x-%02x-%02x-%02x-%02x-%02x\n", | |
2416 | adapter->hw.mac_addr[0], adapter->hw.mac_addr[1], | |
2417 | adapter->hw.mac_addr[2], adapter->hw.mac_addr[3], | |
2418 | adapter->hw.mac_addr[4], adapter->hw.mac_addr[5]); | |
2419 | ||
2420 | INIT_WORK(&adapter->reset_task, atl1e_reset_task); | |
2421 | INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task); | |
2422 | err = register_netdev(netdev); | |
2423 | if (err) { | |
2424 | dev_err(&pdev->dev, "register netdevice failed\n"); | |
2425 | goto err_register; | |
2426 | } | |
2427 | ||
2428 | /* assume we have no link for now */ | |
2429 | netif_stop_queue(netdev); | |
2430 | netif_carrier_off(netdev); | |
2431 | ||
2432 | cards_found++; | |
2433 | ||
2434 | return 0; | |
2435 | ||
2436 | err_reset: | |
2437 | err_register: | |
2438 | err_sw_init: | |
2439 | err_eeprom: | |
2440 | iounmap(adapter->hw.hw_addr); | |
2441 | err_init_netdev: | |
2442 | err_ioremap: | |
2443 | free_netdev(netdev); | |
2444 | err_alloc_etherdev: | |
2445 | pci_release_regions(pdev); | |
2446 | err_pci_reg: | |
2447 | err_dma: | |
2448 | pci_disable_device(pdev); | |
2449 | return err; | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * atl1e_remove - Device Removal Routine | |
2454 | * @pdev: PCI device information struct | |
2455 | * | |
2456 | * atl1e_remove is called by the PCI subsystem to alert the driver | |
2457 | * that it should release a PCI device. The could be caused by a | |
2458 | * Hot-Plug event, or because the driver is going to be removed from | |
2459 | * memory. | |
2460 | */ | |
2461 | static void __devexit atl1e_remove(struct pci_dev *pdev) | |
2462 | { | |
2463 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2464 | struct atl1e_adapter *adapter = netdev_priv(netdev); | |
2465 | ||
2466 | /* | |
2467 | * flush_scheduled work may reschedule our watchdog task, so | |
2468 | * explicitly disable watchdog tasks from being rescheduled | |
2469 | */ | |
2470 | set_bit(__AT_DOWN, &adapter->flags); | |
2471 | ||
2472 | atl1e_del_timer(adapter); | |
2473 | atl1e_cancel_work(adapter); | |
2474 | ||
2475 | unregister_netdev(netdev); | |
2476 | atl1e_free_ring_resources(adapter); | |
2477 | atl1e_force_ps(&adapter->hw); | |
2478 | iounmap(adapter->hw.hw_addr); | |
2479 | pci_release_regions(pdev); | |
2480 | free_netdev(netdev); | |
2481 | pci_disable_device(pdev); | |
2482 | } | |
2483 | ||
2484 | /* | |
2485 | * atl1e_io_error_detected - called when PCI error is detected | |
2486 | * @pdev: Pointer to PCI device | |
2487 | * @state: The current pci connection state | |
2488 | * | |
2489 | * This function is called after a PCI bus error affecting | |
2490 | * this device has been detected. | |
2491 | */ | |
2492 | static pci_ers_result_t | |
2493 | atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2494 | { | |
2495 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2496 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2497 | |
2498 | netif_device_detach(netdev); | |
2499 | ||
2500 | if (netif_running(netdev)) | |
2501 | atl1e_down(adapter); | |
2502 | ||
2503 | pci_disable_device(pdev); | |
2504 | ||
2505 | /* Request a slot slot reset. */ | |
2506 | return PCI_ERS_RESULT_NEED_RESET; | |
2507 | } | |
2508 | ||
2509 | /* | |
2510 | * atl1e_io_slot_reset - called after the pci bus has been reset. | |
2511 | * @pdev: Pointer to PCI device | |
2512 | * | |
2513 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2514 | * resembles the first-half of the e1000_resume routine. | |
2515 | */ | |
2516 | static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev) | |
2517 | { | |
2518 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2519 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2520 | |
2521 | if (pci_enable_device(pdev)) { | |
2522 | dev_err(&pdev->dev, | |
2523 | "ATL1e: Cannot re-enable PCI device after reset.\n"); | |
2524 | return PCI_ERS_RESULT_DISCONNECT; | |
2525 | } | |
2526 | pci_set_master(pdev); | |
2527 | ||
2528 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
2529 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
2530 | ||
2531 | atl1e_reset_hw(&adapter->hw); | |
2532 | ||
2533 | return PCI_ERS_RESULT_RECOVERED; | |
2534 | } | |
2535 | ||
2536 | /* | |
2537 | * atl1e_io_resume - called when traffic can start flowing again. | |
2538 | * @pdev: Pointer to PCI device | |
2539 | * | |
2540 | * This callback is called when the error recovery driver tells us that | |
2541 | * its OK to resume normal operation. Implementation resembles the | |
2542 | * second-half of the atl1e_resume routine. | |
2543 | */ | |
2544 | static void atl1e_io_resume(struct pci_dev *pdev) | |
2545 | { | |
2546 | struct net_device *netdev = pci_get_drvdata(pdev); | |
454d7c9b | 2547 | struct atl1e_adapter *adapter = netdev_priv(netdev); |
a6a53252 JY |
2548 | |
2549 | if (netif_running(netdev)) { | |
2550 | if (atl1e_up(adapter)) { | |
2551 | dev_err(&pdev->dev, | |
2552 | "ATL1e: can't bring device back up after reset\n"); | |
2553 | return; | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | netif_device_attach(netdev); | |
2558 | } | |
2559 | ||
2560 | static struct pci_error_handlers atl1e_err_handler = { | |
2561 | .error_detected = atl1e_io_error_detected, | |
2562 | .slot_reset = atl1e_io_slot_reset, | |
2563 | .resume = atl1e_io_resume, | |
2564 | }; | |
2565 | ||
2566 | static struct pci_driver atl1e_driver = { | |
2567 | .name = atl1e_driver_name, | |
2568 | .id_table = atl1e_pci_tbl, | |
2569 | .probe = atl1e_probe, | |
2570 | .remove = __devexit_p(atl1e_remove), | |
2571 | /* Power Managment Hooks */ | |
2572 | #ifdef CONFIG_PM | |
2573 | .suspend = atl1e_suspend, | |
2574 | .resume = atl1e_resume, | |
2575 | #endif | |
2576 | .shutdown = atl1e_shutdown, | |
2577 | .err_handler = &atl1e_err_handler | |
2578 | }; | |
2579 | ||
2580 | /* | |
2581 | * atl1e_init_module - Driver Registration Routine | |
2582 | * | |
2583 | * atl1e_init_module is the first routine called when the driver is | |
2584 | * loaded. All it does is register with the PCI subsystem. | |
2585 | */ | |
2586 | static int __init atl1e_init_module(void) | |
2587 | { | |
2588 | return pci_register_driver(&atl1e_driver); | |
2589 | } | |
2590 | ||
2591 | /* | |
2592 | * atl1e_exit_module - Driver Exit Cleanup Routine | |
2593 | * | |
2594 | * atl1e_exit_module is called just before the driver is removed | |
2595 | * from memory. | |
2596 | */ | |
2597 | static void __exit atl1e_exit_module(void) | |
2598 | { | |
2599 | pci_unregister_driver(&atl1e_driver); | |
2600 | } | |
2601 | ||
2602 | module_init(atl1e_init_module); | |
2603 | module_exit(atl1e_exit_module); |